/* ==========================================================================
   TTR云机场 Cloud (ttrcloud.cyou) - 2.0 全新全新定制主样式表
   风格模式：Cyber-Violet 赛博紫光 + 冰晶霓虹极客美学
   与 ttrcloud.cfd 彻底隔离并采用全新视觉语言与组件布局
   ========================================================================== */

:root {
  --bg-dark: #070711;
  --bg-surface: #0e0d1b;
  --bg-card: #151326;
  --bg-card-hover: #1c1a33;
  --bg-glass: rgba(21, 19, 38, 0.75);
  --border-color: rgba(139, 92, 246, 0.18);
  --border-hover: rgba(139, 92, 246, 0.45);
  --border-glow: rgba(6, 182, 212, 0.5);

  --violet-primary: #8b5cf6;
  --violet-hover: #7c3aed;
  --cyan-neon: #06b6d4;
  --rose-accent: #f43f5e;
  --emerald-accent: #10b981;
  --amber-accent: #f59e0b;

  --text-main: #f8fafc;
  --text-sub: #a1a1aa;
  --text-muted: #71717a;

  --gradient-neon: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 50%, #ec4899 100%);
  --gradient-violet: linear-gradient(135deg, #7c3aed 0%, #2563eb 100%);
  --gradient-glass: linear-gradient(180deg, rgba(30, 27, 56, 0.7) 0%, rgba(14, 13, 27, 0.9) 100%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --shadow-neon: 0 0 35px rgba(139, 92, 246, 0.28);
  --shadow-card: 0 16px 36px -12px rgba(0, 0, 0, 0.7);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.68;
}

body {
  overflow-x: hidden;
  background: var(--bg-dark);
  background-image: 
    radial-gradient(circle at 20% 10%, rgba(139, 92, 246, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 50%, rgba(6, 182, 212, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 40% 90%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: var(--cyan-neon);
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
  color: #67e8f9;
}

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

.section-padding {
  padding: 90px 0;
}

.text-gradient {
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Header & Nav Layout - Brand New Floating Island Style */
.header-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 1240px;
  z-index: 1000;
  background: rgba(14, 13, 27, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: all 0.3s ease;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  padding: 0 20px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.logo-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 10px;
  background: rgba(139, 92, 246, 0.2);
  border: 1px solid rgba(139, 92, 246, 0.4);
  color: #c4b5fd;
  border-radius: 20px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-sub);
  font-size: 0.94rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: #fff;
}

.btn-cyber-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gradient-violet);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-cyber-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(124, 58, 237, 0.65);
  color: #fff;
}

.btn-cyber-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-cyber-outline:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-hover);
  color: #fff;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Mobile Drawer Menu */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 92px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  background: rgba(14, 13, 27, 0.96);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  z-index: 999;
}

.mobile-nav-drawer.active {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-links a {
  font-size: 1.05rem;
  color: var(--text-main);
  display: block;
}

/* Hero Section */
.hero-section {
  padding-top: 180px;
  padding-bottom: 90px;
  text-align: center;
}

.hero-status-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.35);
  border-radius: 30px;
  color: #ddd6fe;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 28px;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1.2px;
  margin-bottom: 24px;
}

.hero-subtitle {
  max-width: 840px;
  margin: 0 auto 40px auto;
  font-size: 1.15rem;
  color: var(--text-sub);
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-neon);
}

.stat-val {
  font-size: 2.2rem;
  font-weight: 900;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.stat-desc {
  font-size: 0.86rem;
  color: var(--text-sub);
}

/* Latency Dashboard */
.monitor-section {
  padding: 30px 0 90px 0;
}

.monitor-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.monitor-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.node-item {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.node-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.node-flag { font-size: 1.8rem; }
.node-name { font-size: 0.98rem; font-weight: 700; color: #fff; }
.node-sub { font-size: 0.78rem; color: var(--text-muted); }
.node-ping-val { font-size: 0.95rem; font-weight: 800; color: var(--emerald-accent); }

/* Grid Features Layout */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 56px auto;
}

.section-tag {
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--violet-primary);
  font-weight: 800;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-sub);
}

.feature-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.3s ease;
  position: relative;
}

.feature-box:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-neon);
}

.feature-icon-badge {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.feature-box h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.feature-box p {
  color: var(--text-sub);
  font-size: 0.96rem;
  line-height: 1.65;
}

/* Pricing Grid Layout */
.pricing-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.pricing-card-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card-box:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
}

.pricing-card-box.featured {
  border-color: var(--violet-primary);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.15) 0%, rgba(21, 19, 38, 0.95) 100%);
  box-shadow: var(--shadow-neon);
}

.card-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-violet);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}

.card-plan-name { font-size: 1.35rem; font-weight: 800; margin-bottom: 6px; }
.card-plan-desc { font-size: 0.84rem; color: var(--text-sub); margin-bottom: 22px; min-height: 40px; }

.price-display {
  font-size: 2.5rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 24px;
}

.price-display span { font-size: 0.92rem; font-weight: 400; color: var(--text-muted); }

.feature-list { list-style: none; margin-bottom: 30px; }
.feature-list li {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-list svg { width: 16px; height: 16px; color: var(--emerald-accent); flex-shrink: 0; }

/* Testimonials Layout */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-quote {
  font-size: 0.96rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.review-user-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-violet);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1.1rem;
}

/* FAQ Layout */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

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

.faq-block.active { border-color: var(--violet-primary); }

.faq-head {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 26px;
  text-align: left;
  font-size: 1.06rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-icon-arrow { color: var(--violet-primary); transition: transform 0.3s ease; }
.faq-block.active .faq-icon-arrow { transform: rotate(180deg); }

.faq-body {
  padding: 0 26px 22px 26px;
  color: var(--text-sub);
  font-size: 0.98rem;
  line-height: 1.72;
  display: none;
}

.faq-block.active .faq-body { display: block; }

/* Articles Grid Layout */
.articles-cards-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.art-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.art-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.art-tag {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  color: #c4b5fd;
  background: rgba(139, 92, 246, 0.15);
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.art-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
}

.art-card h3 a { color: #fff; }
.art-card h3 a:hover { color: var(--cyan-neon); }
.art-summary { font-size: 0.88rem; color: var(--text-sub); margin-bottom: 22px; line-height: 1.6; }

.art-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
}

/* Article Detail Page Layout */
.article-header-section {
  padding-top: 150px;
  padding-bottom: 40px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.article-title-single {
  font-size: 2.3rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.article-body-layout {
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 40px;
  padding-bottom: 90px;
}

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 42px;
  color: var(--text-sub);
  font-size: 1.05rem;
  line-height: 1.82;
}

.article-content h2 {
  font-size: 1.65rem;
  color: #fff;
  margin: 38px 0 18px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-content h3 {
  font-size: 1.28rem;
  color: #fff;
  margin: 26px 0 14px 0;
}

.article-content p { margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 22px 24px; }
.article-content li { margin-bottom: 10px; }

.article-content blockquote {
  background: rgba(139, 92, 246, 0.1);
  border-left: 4px solid var(--violet-primary);
  padding: 18px 22px;
  margin: 26px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #fff;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
}

.sidebar-widget-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-links { list-style: none; }
.sidebar-links li { margin-bottom: 14px; font-size: 0.94rem; }
.sidebar-links a { color: var(--text-sub); }
.sidebar-links a:hover { color: var(--cyan-neon); }

.cta-box-widget {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.25) 0%, rgba(6, 182, 212, 0.2) 100%);
  border: 1px solid var(--violet-primary);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
}

.cta-box-widget h4 { font-size: 1.25rem; color: #fff; margin-bottom: 10px; }
.cta-box-widget p { font-size: 0.88rem; color: var(--text-sub); margin-bottom: 20px; }

/* Footer & PBN Weight Transfer Area */
.site-footer {
  background: #040409;
  border-top: 1px solid var(--border-color);
  padding: 56px 0 36px 0;
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-info {
  max-width: 620px;
  margin: 0 auto 24px auto;
  font-size: 0.88rem;
  color: var(--text-sub);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.pbn-links-area {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 30px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.pbn-link-item {
  color: var(--text-sub);
  font-weight: 500;
  text-decoration: none;
}

.pbn-link-item:hover {
  color: var(--cyan-neon);
  text-decoration: underline;
}

/* Media Queries */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.6rem; }
  .feature-cards-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-matrix { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .reviews-grid { grid-template-columns: repeat(1, 1fr); }
  .articles-cards-wrap { grid-template-columns: repeat(2, 1fr); }
  .node-grid { grid-template-columns: repeat(2, 1fr); }
  .article-body-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header-nav { top: 10px; width: calc(100% - 24px); }
  .nav-links { display: none; }
  .nav-cta-btn { display: none; }
  .mobile-menu-toggle { display: block; }
  .hero-section { padding-top: 140px; }
  .hero-title { font-size: 2.1rem; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .node-grid { grid-template-columns: 1fr; }
  .feature-cards-grid { grid-template-columns: 1fr; }
  .pricing-matrix { grid-template-columns: 1fr; }
  .articles-cards-wrap { grid-template-columns: 1fr; }
  .article-content { padding: 24px 18px; }
  .article-title-single { font-size: 1.85rem; }
}