/* 忍者云官网 (renzheyunjc.homes) Design System */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
  --bg-main: #FDFBF7;
  --bg-card: #FFFFFF;
  --bg-subtle: #F6F3ED;
  --bg-accent-soft: #F9F0E8;
  
  --color-primary: #FF7A59;
  --color-primary-hover: #E86343;
  --color-primary-light: #FFF0ED;
  
  --color-blue: #2563EB;
  --color-blue-hover: #1D4ED8;
  --color-blue-bg: #1E64F8;
  --color-blue-light: #EFF6FF;
  
  --text-dark: #1F2937;
  --text-medium: #4B5563;
  --text-muted: #8F9CAE;
  --text-white: #FFFFFF;
  
  --border-color: #EFECE6;
  --border-radius-sm: 12px;
  --border-radius-md: 20px;
  --border-radius-lg: 28px;
  --border-radius-pill: 9999px;
  
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.03);
  --shadow-md: 0 10px 25px rgba(0,0,0,0.05);
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
  --shadow-blue: 0 12px 30px rgba(30, 100, 248, 0.25);
  
  --font-family: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: inherit;
}

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

/* Announcement Bar */
.top-notice {
  background: linear-gradient(90deg, #FF7A59, #FF9E7D);
  color: white;
  text-align: center;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
}
.top-notice a {
  text-decoration: underline;
  margin-left: 8px;
  font-weight: 700;
}

/* Header & Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(253, 251, 247, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
}

.logo-badge {
  background: #E85B3A;
  color: #FFF;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 10px rgba(232, 91, 58, 0.3);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-medium);
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Dropdown menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  list-style: none;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-medium);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.dropdown-link:hover {
  background: var(--bg-subtle);
  color: var(--color-primary);
}

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

.search-btn {
  background: var(--bg-subtle);
  color: var(--text-medium);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 1.1rem;
}

.search-btn:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--text-white);
  padding: 10px 24px;
  border-radius: var(--border-radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(255, 122, 89, 0.35);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(255, 122, 89, 0.45);
}

.btn-secondary {
  background: var(--bg-subtle);
  color: var(--text-dark);
  padding: 10px 20px;
  border-radius: var(--border-radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: #EBE5DB;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  background: none;
  color: var(--text-dark);
}

/* Hero & Data Dashboard Section */
.hero-section {
  padding: 60px 0 80px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-accent-soft);
  color: var(--color-primary);
  padding: 6px 16px;
  border-radius: var(--border-radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 122, 89, 0.2);
}

.hero-title {
  font-size: 2.8rem;
  line-height: 1.2;
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-title span {
  color: var(--color-primary);
  background: linear-gradient(135deg, #FF7A59 0%, #E85B3A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-medium);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.tag-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: var(--border-radius-pill);
  font-size: 0.85rem;
  color: var(--text-medium);
  font-weight: 500;
}

/* Data Dashboard Card (Image 2 style soft UI) */
.dashboard-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.dashboard-title {
  font-size: 1.15rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-indicator {
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-item {
  background: var(--bg-subtle);
  padding: 16px;
  border-radius: var(--border-radius-md);
  text-align: center;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.chart-container {
  height: 160px;
  width: 100%;
  margin-bottom: 16px;
}

/* Node List Section */
.section-title {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.section-subtitle {
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-medium);
  max-width: 680px;
  margin: 0 auto 48px;
}

.node-section {
  padding: 60px 0;
  background: var(--bg-subtle);
  border-radius: var(--border-radius-lg);
  margin-bottom: 60px;
}

.node-table-wrapper {
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.node-table th, .node-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.node-table th {
  background: #FAF8F5;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-medium);
}

.node-flag {
  font-size: 1.3rem;
  margin-right: 8px;
  vertical-align: middle;
}

.latency-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--border-radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
}
.latency-low { background: #E6F4EA; color: #137333; }
.latency-med { background: #FEF7E0; color: #B06000; }

.multiplier-tag {
  background: #F3F4F6;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
}

.copy-sub-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--border-radius-md);
  margin-top: 24px;
  border: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 16px;
}

.sub-input-group {
  display: flex;
  gap: 10px;
  flex: 1;
  min-width: 280px;
}

.sub-input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-pill);
  background: var(--bg-subtle);
  font-family: monospace;
  font-size: 0.9rem;
}

/* Pricing Section (Image 1 style matching) */
.pricing-section {
  padding: 60px 0 80px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.pricing-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

/* Highlighted Plan (Matching 20元 Blue Card in Image 1) */
.pricing-card.featured {
  background: var(--color-blue-bg);
  color: var(--text-white);
  border: none;
  box-shadow: var(--shadow-blue);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.badge-recommend {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  opacity: 0.9;
}

.plan-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.pricing-card.featured .plan-sub {
  color: rgba(255, 255, 255, 0.8);
}

.plan-name {
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 24px;
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 32px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price span {
  font-size: 1rem;
  font-weight: 500;
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
}

.plan-feature-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-size: 0.95rem;
}
.pricing-card.featured .plan-feature-item {
  border-bottom-color: rgba(255,255,255,0.15);
}

.btn-card {
  width: 100%;
  padding: 14px;
  border-radius: var(--border-radius-pill);
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  background: #0D1117;
  color: white;
  transition: var(--transition);
}

.pricing-card.featured .btn-card {
  background: white;
  color: var(--color-blue);
}

.btn-card:hover {
  opacity: 0.9;
}

/* Quick Client Guide Section */
.client-section {
  padding: 60px 0;
  background: var(--bg-subtle);
  border-radius: var(--border-radius-lg);
  margin-bottom: 80px;
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
}

.client-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.client-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.client-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.client-desc {
  font-size: 0.85rem;
  color: var(--text-medium);
  margin-bottom: 16px;
}

/* SEO Articles & Knowledge Base Grid */
.articles-section {
  padding: 40px 0 80px;
}

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

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

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.article-tag {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--border-radius-pill);
  margin-bottom: 12px;
  width: fit-content;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--text-dark);
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-medium);
  margin-bottom: 20px;
  line-height: 1.6;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

/* FAQ Accordion Section */
.faq-section {
  padding: 60px 0 80px;
  background: var(--bg-subtle);
  border-radius: var(--border-radius-lg);
  margin-bottom: 80px;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

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

.faq-question {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-medium);
  line-height: 1.7;
  display: none;
}

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

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* User Reviews Section */
.reviews-section {
  padding: 40px 0 80px;
}

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

.review-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  padding: 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.review-stars {
  color: #F59E0B;
  margin-bottom: 12px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-medium);
  margin-bottom: 16px;
  line-height: 1.6;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Global Search Modal (Matching Image 3 & 4 style tags) */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 100px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-box {
  background: var(--bg-card);
  width: 90%;
  max-width: 650px;
  border-radius: var(--border-radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.search-input-wrapper {
  position: relative;
  margin-bottom: 24px;
}

.search-input {
  width: 100%;
  padding: 16px 20px 16px 48px;
  border-radius: var(--border-radius-pill);
  border: 1px solid var(--border-color);
  font-size: 1rem;
  background: var(--bg-subtle);
  outline: none;
}

.search-input-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 1.5rem;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
}

.hot-search-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.hot-search-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hot-tag {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--border-radius-pill);
  font-size: 0.9rem;
  color: var(--text-dark);
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hot-tag:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: rgba(255, 122, 89, 0.3);
}

/* Footer */
.footer {
  background: #FAF8F5;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  color: var(--text-medium);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

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

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

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-medium);
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .client-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }
  .articles-grid { grid-template-columns: 1fr; }
  .client-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
}