/* ==========================================================================
   Anyland云 (anyland1.sbs) - 官方落地页与文章矩阵全套样式表
   主题风格：现代清新白蓝科技风 (Crisp White & Ocean Cyan-Blue Theme)
   支持 100% 响应式移动端自适应、高转化率 UI 及 SEO 呈现
   ========================================================================== */

:root {
  --bg-dark: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f9ff;
  --border-color: rgba(226, 232, 240, 0.9);
  --border-highlight: rgba(2, 132, 199, 0.45);
  
  --primary: #0284c7;
  --primary-gradient: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #3b82f6 100%);
  --accent-glow: rgba(2, 132, 199, 0.18);
  --accent-pink: #ec4899;
  --accent-green: #059669;
  
  --text-main: #0f172a;
  --text-sub: #334155;
  --text-muted: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-glow: 0 10px 30px -10px rgba(2, 132, 199, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  scroll-behavior: smooth;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #e0f2fe 0%, #f8fafc 65%);
  min-height: 100vh;
}

/* 常用基础类 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.section-padding {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(2, 132, 199, 0.3);
  border-radius: 20px;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.3;
}

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

/* 按钮通用组件 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary-gradient);
  color: #fff;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(2, 132, 199, 0.45);
  opacity: 0.96;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: var(--primary);
  border: 1px solid #cbd5e1;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 50px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.btn-secondary:hover {
  background: #f0f9ff;
  border-color: var(--primary);
  color: var(--primary);
}

/* Header Navbar */
.header-dock {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 40px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  transition: var(--transition);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.2rem;
}

.brand-logo img {
  width: 36px;
  height: 36px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  background: rgba(241, 245, 249, 0.85);
  padding: 4px 8px;
  border-radius: 30px;
  border: 1px solid rgba(226, 232, 240, 0.9);
}

.nav-links a {
  color: #475569;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 20px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}

.nav-links a:hover {
  color: var(--primary);
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding-top: 170px;
  padding-bottom: 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: #e0f2fe;
  border: 1px solid #bae6fd;
  border-radius: 30px;
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 20px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(5, 150, 105, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(5, 150, 105, 0); }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-sub);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
}

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

/* Hero Dashboard Card & Workflow Diagram Mode */
.hero-dashboard-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-dashboard-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid #f1f5f9;
}

.dashboard-title {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dashboard-status {
  font-size: 0.82rem;
  color: var(--accent-green);
  font-weight: 700;
  background: #ecfdf5;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid #a7f3d0;
}

.workflow-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.workflow-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.workflow-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.step-item {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.step-item.highlight {
  border-color: #0284c7;
  background: #f0f9ff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.12);
}

.step-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.step-info strong {
  display: block;
  font-size: 0.8rem;
  color: var(--text-main);
  font-weight: 800;
}

.step-info span {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.step-arrow {
  color: var(--primary);
  font-weight: 900;
  font-size: 1.1rem;
}

.dashboard-nodes-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dash-node-item {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.dash-node-item:hover {
  border-color: var(--primary);
  background: #f0f9ff;
}

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

.node-meta .flag {
  font-size: 1.5rem;
}

.node-title {
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--text-main);
}

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

.node-latency {
  font-family: monospace;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--accent-green);
  background: #ecfdf5;
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid #a7f3d0;
}

.hero-card-list strong {
  display: block;
  color: var(--text-main);
  font-size: 1rem;
  margin-bottom: 2px;
}

.hero-card-list span {
  font-size: 0.88rem;
  color: var(--text-sub);
}

/* Latency Ping Monitor Section */
.ping-card-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.ping-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.ping-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.ping-item:hover {
  border-color: var(--primary);
  background: #f0f9ff;
}

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

.ping-flag {
  font-size: 1.8rem;
}

.ping-name {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text-main);
}

.ping-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.ping-badge {
  text-align: right;
}

.ping-val {
  font-family: monospace;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--accent-green);
}

.ping-bar-bg {
  width: 70px;
  height: 5px;
  background: #e2e8f0;
  border-radius: 10px;
  margin-top: 6px;
  overflow: hidden;
}

.ping-bar-fill {
  height: 100%;
  background: var(--accent-green);
  border-radius: 10px;
  transition: width 0.5s ease;
}

/* Bento Grid Core Advantages Section */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 15px 35px rgba(2, 132, 199, 0.12);
}

.bento-card.span-2 {
  grid-column: span 2;
}

.bento-icon {
  width: 50px;
  height: 50px;
  background: #e0f2fe;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  color: var(--primary);
}

.bento-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
}

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

/* Pricing Section Matrix */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(2, 132, 199, 0.15);
}

.pricing-card.featured {
  border: 2px solid var(--primary);
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
  box-shadow: 0 15px 40px rgba(2, 132, 199, 0.18);
}

.featured-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.plan-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-main);
}

.plan-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  min-height: 38px;
  margin-bottom: 20px;
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 24px;
}

.plan-price .currency {
  font-size: 1.2rem;
  font-weight: 700;
}

.plan-price .period {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-sub);
}

.plan-features .check {
  color: var(--accent-green);
  font-weight: 800;
}

.pricing-card .btn-primary,
.pricing-card .btn-secondary {
  width: 100%;
}

/* SEO Articles Grid */
.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(--radius-md);
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.article-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(2, 132, 199, 0.12);
}

.article-tag {
  font-size: 0.78rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 10px;
  display: block;
}

.article-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.45;
  color: var(--text-main);
  margin-bottom: 12px;
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid #f1f5f9;
  padding-top: 14px;
}

.read-more-link {
  color: var(--primary);
  font-weight: 700;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars {
  color: #f59e0b;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.review-content {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 24px;
  font-style: italic;
}

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

.review-user .avatar {
  width: 42px;
  height: 42px;
  background: var(--primary-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
}

.user-name {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--text-main);
}

.user-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* FAQ Accordion Section */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.03);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 22px 28px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-toggle-icon {
  font-size: 0.85rem;
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-answer {
  padding: 0 28px 24px 28px;
  color: var(--text-sub);
  font-size: 0.95rem;
  line-height: 1.7;
  display: none;
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}

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

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

/* Article Page Typography Styles */
.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding-top: 150px;
  padding-bottom: 90px;
}

.article-header {
  margin-bottom: 40px;
  text-align: center;
}

.article-category-badge {
  display: inline-block;
  padding: 4px 14px;
  background: #e0f2fe;
  border: 1px solid #bae6fd;
  border-radius: 20px;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.article-main-title {
  font-size: 2.3rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text-main);
}

.article-post-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-body {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
  color: var(--text-sub);
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  margin-top: 28px;
  margin-bottom: 12px;
}

.article-body p {
  margin-bottom: 20px;
  color: var(--text-sub);
}

.article-body ul, .article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
  color: var(--text-sub);
}

.article-body li {
  margin-bottom: 10px;
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: var(--transition);
}

.article-body a:hover {
  color: #2563eb;
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: #f0f9ff;
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  font-style: italic;
  color: var(--text-main);
}

.article-cta-box {
  background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
  border: 1px solid #bae6fd;
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0;
  box-shadow: 0 10px 30px rgba(2, 132, 199, 0.08);
}

.article-cta-box h3 {
  font-size: 1.4rem;
  color: var(--text-main);
  margin-top: 0;
  margin-bottom: 10px;
}

.article-cta-box p {
  font-size: 0.95rem;
  color: var(--text-sub);
  margin-bottom: 20px;
}

.article-internal-links {
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.article-internal-links h4 {
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 16px;
}

.article-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.article-link-item {
  background: #f8fafc;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
  display: block;
}

.article-link-item:hover {
  background: #f0f9ff;
  border-color: var(--primary);
  color: var(--text-main);
}

/* Site Footer (Core Task 2 PBN Backlinks) */
.site-footer {
  background: #0f172a;
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px 0;
  text-align: center;
  color: #f8fafc;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.1rem;
  color: #ffffff;
}

.footer-brand img {
  width: 28px;
  height: 28px;
}

.footer-nav {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: #38bdf8;
}

/* 【核心任务 2】低调美观小字号友情链接区（精准 PBN 权重输血管道） */
.friend-links-zone {
  margin-top: 10px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 0.82rem;
  color: #64748b;
}

.friend-links-title {
  color: #64748b;
  font-size: 0.82rem;
}

.friend-links-group {
  display: inline-flex;
  align-items: center;
  gap: 16px;
}

.friend-links-group a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.82rem;
  transition: var(--transition);
  opacity: 0.88;
}

.friend-links-group a:hover {
  color: #38bdf8;
  opacity: 1;
}

.footer-copyright {
  font-size: 0.82rem;
  color: #64748b;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  width: 100%;
}

/* Mobile Responsive Adjustments */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-card.span-2 {
    grid-column: span 2;
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-dock {
    border-radius: 20px;
    padding: 10px 18px;
  }
  .nav-links {
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    display: none;
    box-shadow: 0 15px 35px rgba(15, 23, 42, 0.12);
  }
  .nav-links.show {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 2.3rem;
  }
  .ping-grid {
    grid-template-columns: 1fr;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-card.span-2 {
    grid-column: span 1;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-links-grid {
    grid-template-columns: 1fr;
  }
  .article-body {
    padding: 24px 18px;
  }
  .article-main-title {
    font-size: 1.7rem;
  }
}

/* ==========================================================================
   客户端下载引导弹窗与下载中心扩展样式 (Crisp White & Ocean Blue Theme)
   ========================================================================== */

body.modal-open {
  overflow: hidden;
}

.download-modal {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

.download-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.download-modal-dialog {
  position: relative;
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.35);
  max-width: 520px;
  width: 100%;
  padding: 32px 28px 24px;
  z-index: 2;
  transform: translateY(20px) scale(0.96);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--border-color);
}

.download-modal.active .download-modal-dialog {
  transform: translateY(0) scale(1);
}

.download-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: #f1f5f9;
  color: #64748b;
  font-size: 24px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.download-modal-close:hover {
  background: #e2e8f0;
  color: var(--text-main);
  transform: rotate(90deg);
}

.download-modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.modal-badge {
  display: inline-block;
  background: rgba(2, 132, 199, 0.1);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.modal-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.3;
}

.modal-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-selected-plan {
  margin-top: 12px;
  padding: 8px 14px;
  background: #f0f9ff;
  border: 1px dashed rgba(2, 132, 199, 0.45);
  border-radius: var(--radius-sm);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
}

/* Modal Platform Cards (Android & iOS only - 规则 17) */
.platform-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.platform-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: #f8fafc;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-main);
}

.platform-card:hover {
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 8px 20px -4px rgba(2, 132, 199, 0.2);
  transform: translateY(-2px);
}

.platform-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(2, 132, 199, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.platform-card:hover .platform-icon {
  background: var(--primary);
  color: #ffffff;
}

.platform-info {
  flex: 1;
}

.platform-name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 2px;
}

.platform-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.btn-download-action {
  padding: 8px 16px;
  background: var(--primary-gradient);
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.platform-card:hover .btn-download-action {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.4);
}

/* 3-Step Mini Guide */
.modal-steps-guide {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: #f8fafc;
  padding: 12px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
}

.guide-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
}

.step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-text {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  line-height: 1.3;
}

.download-modal-footer {
  text-align: center;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.download-center-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
  text-decoration: none;
}

.download-center-link:hover {
  text-decoration: underline;
  color: #2563eb;
}

/* Download Center Page Custom Styles */
.download-hero {
  padding: 130px 0 50px;
  text-align: center;
}

.download-platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 820px;
  margin: 36px auto 0;
}

.download-platform-box {
  background: #ffffff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 26px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.download-platform-box:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.download-platform-box.recommended {
  border-color: var(--primary);
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
  box-shadow: 0 10px 30px -10px rgba(2, 132, 199, 0.3);
}

.download-platform-box .rec-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
  white-space: nowrap;
}

.download-platform-box .box-icon {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: rgba(2, 132, 199, 0.12);
  color: var(--primary);
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-platform-box h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.download-platform-box p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.download-specs-list {
  list-style: none;
  text-align: left;
  margin-bottom: 24px;
  padding: 12px 16px;
  background: #f8fafc;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: #475569;
}

.download-specs-list li {
  padding: 5px 0;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed #e2e8f0;
}

.download-specs-list li:last-child {
  border-bottom: none;
}

.download-steps-section {
  padding: 60px 0;
  background: #ffffff;
}

.steps-flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  margin-top: 36px;
}

.step-card {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  position: relative;
  text-align: center;
}

.step-card .step-badge {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #ffffff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 0.95rem;
}

.step-card h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.step-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

@media (max-width: 480px) {
  .download-modal-dialog {
    padding: 24px 18px 20px;
  }
  .modal-title {
    font-size: 1.25rem;
  }
  .modal-steps-guide {
    grid-template-columns: 1fr;
    gap: 6px;
    text-align: left;
  }
  .guide-step {
    flex-direction: row;
    gap: 8px;
  }
}