/* Kitty Network - Cyberpunk Cat Terminal CSS (赛博猫终端风格) */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;600;700&family=VT323&display=swap');

:root {
  --bg-color: #0a0e14;
  --bg-card: #0f1620;
  --bg-card-hover: #15202e;
  --terminal-bar: #16202c;
  --text-primary: #00ff9c;
  --text-muted: #648a7b;
  --text-dim: #38594d;
  --accent-magenta: #ff2e88;
  --accent-cyan: #00e5ff;
  --accent-yellow: #fbee35;
  --border-green: #00ff9c44;
  --border-magenta: #ff2e8855;
  --glow-green: 0 0 10px rgba(0, 255, 156, 0.45);
  --glow-magenta: 0 0 12px rgba(255, 46, 136, 0.55);
  --font-mono: 'JetBrains Mono', monospace;
  --font-terminal: 'VT323', monospace;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.65;
}

body {
  background-color: var(--bg-color);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  text-shadow: 0 0 4px rgba(0, 255, 156, 0.3);
}

/* CRT Scanline Overlay */
.crt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.28) 0px,
    rgba(0, 0, 0, 0.28) 1px,
    transparent 1px,
    transparent 2px
  );
  z-index: 9999;
}

.crt-vignette {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.7);
  z-index: 9998;
}

/* Container */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 20, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-green);
  padding: 12px 0;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-terminal);
  font-size: 1.9rem;
  letter-spacing: 1px;
}

.brand-logo .cat-icon {
  color: var(--accent-magenta);
  font-size: 1.8rem;
  text-shadow: var(--glow-magenta);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  padding: 4px 8px;
  border-radius: 2px;
}

.nav-link:hover {
  color: #fff;
  background: rgba(0, 255, 156, 0.15);
  text-shadow: var(--glow-green);
}

.nav-link.highlight {
  color: var(--accent-magenta);
  border: 1px dashed var(--accent-magenta);
  text-shadow: var(--glow-magenta);
}

.nav-link.highlight:hover {
  background: var(--accent-magenta);
  color: #0a0e14;
}

/* Neon Buttons */
.btn-neon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--text-primary);
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  transition: all 0.25s ease;
  box-shadow: 0 0 10px rgba(0, 255, 156, 0.2);
}

.btn-neon:hover {
  background: var(--text-primary);
  color: #0a0e14;
  box-shadow: 0 0 20px var(--text-primary), 0 0 40px rgba(0, 255, 156, 0.4);
  text-shadow: none;
  transform: translateY(-2px);
}

.btn-neon.btn-magenta {
  color: var(--accent-magenta);
  border-color: var(--accent-magenta);
  box-shadow: 0 0 10px rgba(255, 46, 136, 0.2);
}

.btn-neon.btn-magenta:hover {
  background: var(--accent-magenta);
  color: #0a0e14;
  box-shadow: 0 0 20px var(--accent-magenta), 0 0 40px rgba(255, 46, 136, 0.4);
}

.btn-neon.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-neon.btn-lg {
  padding: 14px 30px;
  font-size: 1.05rem;
}

/* Hero Section */
.hero {
  padding: 60px 0 40px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-tagline {
  display: inline-block;
  font-family: var(--font-terminal);
  font-size: 1.3rem;
  color: var(--accent-magenta);
  background: rgba(255, 46, 136, 0.1);
  padding: 3px 10px;
  border-left: 3px solid var(--accent-magenta);
  margin-bottom: 12px;
}

/* Glitch Title */
.glitch-title {
  font-family: var(--font-terminal);
  font-size: 3.8rem;
  line-height: 1.1;
  color: var(--text-primary);
  text-shadow: var(--glow-green);
  position: relative;
  display: inline-block;
  cursor: pointer;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.glitch-title:hover {
  animation: glitch-anim 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94) both infinite;
}

@keyframes glitch-anim {
  0% {
    transform: translate(0);
    text-shadow: -2px 0 var(--accent-magenta), 2px 0 var(--accent-cyan);
  }
  25% {
    transform: translate(-3px, 1px);
    text-shadow: 3px -1px var(--accent-magenta), -3px 1px var(--accent-cyan);
  }
  50% {
    transform: translate(2px, -2px);
    text-shadow: -2px 2px var(--accent-magenta), 2px -2px var(--accent-cyan);
  }
  75% {
    transform: translate(-2px, 2px);
    text-shadow: 2px 1px var(--accent-magenta), -2px -1px var(--accent-cyan);
  }
  100% {
    transform: translate(0);
    text-shadow: -2px 0 var(--accent-magenta), 2px 0 var(--accent-cyan);
  }
}

.hero-subtitle {
  font-size: 1.15rem;
  color: #a4e5c8;
  margin-bottom: 14px;
  line-height: 1.6;
}

/* Typewriter Container */
.typewriter-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-green);
  padding: 8px 14px;
  border-radius: 4px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--accent-yellow);
}

.prompt-symbol {
  color: var(--accent-magenta);
  margin-right: 8px;
  font-weight: 700;
}

.typewriter-text {
  min-height: 22px;
}

.cursor-blink {
  display: inline-block;
  color: var(--text-primary);
  font-weight: 700;
  animation: blink 0.8s infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.hero-intro {
  color: #8bb3a0;
  font-size: 0.96rem;
  margin-bottom: 26px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

/* Terminal Log Panel */
.terminal-window {
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 15px rgba(0, 255, 156, 0.15);
}

.terminal-header {
  background: var(--terminal-bar);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(0, 255, 156, 0.2);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

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

.terminal-title {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 16px;
  font-size: 0.84rem;
  line-height: 1.8;
  color: #7ce5b8;
  max-height: 380px;
  overflow-y: auto;
}

.log-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
  padding-bottom: 4px;
}

.log-tag {
  color: var(--accent-magenta);
  font-weight: 700;
  margin-right: 6px;
}

.status-badge {
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 0.78rem;
}

.status-ok {
  color: #0a0e14;
  background: var(--text-primary);
  box-shadow: 0 0 6px var(--text-primary);
}

.status-online {
  color: #0a0e14;
  background: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

.status-active {
  color: #0a0e14;
  background: var(--accent-yellow);
  box-shadow: 0 0 6px var(--accent-yellow);
}

/* Section Common */
.section {
  padding: 70px 0;
  position: relative;
}

.section-head {
  text-align: center;
  margin-bottom: 45px;
}

.section-tag {
  font-family: var(--font-terminal);
  font-size: 1.2rem;
  color: var(--accent-magenta);
  letter-spacing: 1.5px;
  display: inline-block;
  margin-bottom: 6px;
}

.section-title {
  font-family: var(--font-terminal);
  font-size: 2.7rem;
  color: var(--text-primary);
  text-shadow: var(--glow-green);
  letter-spacing: 1px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
  max-width: 650px;
  margin: 8px auto 0;
}

/* Features Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  padding: 28px 24px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--text-primary);
  box-shadow: 0 8px 25px rgba(0, 255, 156, 0.15);
  background: var(--bg-card-hover);
}

.feature-card:hover::before {
  transform: translateX(100%);
}

.card-num {
  font-family: var(--font-terminal);
  font-size: 2.2rem;
  color: var(--accent-magenta);
  line-height: 1;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-family: var(--font-terminal);
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.feature-card p {
  color: #8fb8a5;
  font-size: 0.92rem;
  line-height: 1.7;
}

.feature-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tech-pill {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 2px 8px;
  border-radius: 3px;
}

/* Streaming & AI Support */
.unlock-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
}

.unlock-card {
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  padding: 26px;
}

.unlock-card h3 {
  font-family: var(--font-terminal);
  font-size: 1.8rem;
  color: var(--accent-yellow);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.unlock-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 15px;
}

.unlock-item {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 255, 156, 0.15);
  padding: 10px 14px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.unlock-item-name {
  font-size: 0.9rem;
  color: #e0f2eb;
  font-weight: 600;
}

.unlock-item-status {
  font-size: 0.76rem;
  color: var(--text-primary);
  background: rgba(0, 255, 156, 0.12);
  padding: 1px 6px;
  border-radius: 2px;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card.popular {
  border-color: var(--accent-magenta);
  box-shadow: 0 0 25px rgba(255, 46, 136, 0.25);
  transform: translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-magenta);
  color: #0a0e14;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.plan-name {
  font-family: var(--font-terminal);
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 40px;
  margin-bottom: 16px;
}

.plan-price {
  font-family: var(--font-terminal);
  font-size: 3rem;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 20px;
  text-shadow: var(--glow-green);
}

.plan-price.magenta {
  color: var(--accent-magenta);
  text-shadow: var(--glow-magenta);
}

.plan-period {
  font-size: 1rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-features li {
  font-size: 0.88rem;
  color: #b0d8c7;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-features li::before {
  content: '▶';
  color: var(--text-primary);
  font-size: 0.72rem;
}

/* Reviews / Testimonials */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  padding: 22px;
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.review-user {
  font-weight: 700;
  color: #fff;
  font-size: 0.94rem;
}

.review-stars {
  color: var(--accent-yellow);
  font-size: 0.85rem;
  letter-spacing: 2px;
}

.review-content {
  font-size: 0.88rem;
  color: #8fb5a3;
  line-height: 1.65;
  margin-bottom: 12px;
}

.review-meta {
  font-size: 0.78rem;
  color: var(--text-dim);
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  padding-top: 8px;
}

/* FAQ Accordion */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 16px 20px;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.98rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background 0.2s;
}

.faq-question:hover {
  background: rgba(0, 255, 156, 0.08);
}

.faq-symbol {
  color: var(--accent-magenta);
  font-size: 1.2rem;
  transition: transform 0.2s;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 20px;
  color: #8cb5a1;
  font-size: 0.9rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 20px 18px;
}

/* Article & Content Pages Styles */
.article-container {
  max-width: 880px;
  margin: 40px auto 80px;
  padding: 0 20px;
}

.article-header {
  border-bottom: 1px solid var(--border-green);
  padding-bottom: 24px;
  margin-bottom: 30px;
}

.article-header h1 {
  font-family: var(--font-terminal);
  font-size: 2.8rem;
  line-height: 1.2;
  color: #fff;
  text-shadow: var(--glow-green);
  margin-bottom: 14px;
}

.article-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.article-content {
  font-size: 1.02rem;
  line-height: 1.85;
  color: #caeedd;
}

.article-content h2 {
  font-family: var(--font-terminal);
  font-size: 2.1rem;
  color: var(--accent-yellow);
  margin: 36px 0 16px;
  border-left: 3px solid var(--accent-magenta);
  padding-left: 12px;
}

.article-content h3 {
  font-family: var(--font-terminal);
  font-size: 1.6rem;
  color: #00ff9c;
  margin: 26px 0 12px;
}

.article-content p {
  margin-bottom: 18px;
  color: #a4cebb;
}

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
  color: #a4cebb;
}

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

.article-content blockquote {
  background: rgba(0, 0, 0, 0.4);
  border-left: 4px solid var(--text-primary);
  padding: 12px 18px;
  margin: 20px 0;
  color: #7ee2b6;
  font-style: italic;
}

.article-content a {
  color: var(--accent-magenta);
  text-decoration: underline;
  text-shadow: var(--glow-magenta);
  font-weight: 600;
  transition: all 0.2s;
}

.article-content a:hover {
  color: #fff;
  background: var(--accent-magenta);
}

.article-card-link {
  background: var(--bg-card);
  border: 1px solid var(--border-magenta);
  border-radius: 6px;
  padding: 18px;
  margin: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-card-info h4 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 4px;
}

.article-card-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Footer (STRICT: ONLY 4 links) */
.footer {
  background: #06090d;
  border-top: 1px solid var(--border-green);
  padding: 40px 0 30px;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px;
  margin-bottom: 22px;
}

.footer-link {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.2s;
  padding: 4px 10px;
  border: 1px solid transparent;
}

.footer-link:hover {
  color: #fff;
  border-color: var(--text-primary);
  background: rgba(0, 255, 156, 0.1);
  text-shadow: var(--glow-green);
}

.footer-brand {
  font-family: var(--font-terminal);
  font-size: 1.4rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.footer-copyright {
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--text-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .unlock-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card.popular {
    transform: none;
  }
}

@media (max-width: 768px) {
  .glitch-title {
    font-size: 2.8rem;
  }
  .section-title {
    font-size: 2.2rem;
  }
  .nav-menu {
    display: none; /* Mobile menu can be simplified or stacked */
  }
  .nav-wrap {
    flex-wrap: wrap;
    gap: 12px;
  }
  .nav-menu.mobile-open {
    display: flex;
    flex-direction: column;
    width: 100%;
    background: var(--bg-card);
    padding: 15px;
    border: 1px solid var(--border-green);
  }
  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn-neon {
    width: 100%;
    text-align: center;
  }
  .article-card-link {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
}