/* ==========================================================================
   传送门云机场 (chuansongmen.cfd) - 官方主样式表
   工业级 IEPL/IPLC 物理专线与科学上网全球加速落地页
   纯白明亮科技风 / 极简高雅 / 全端自适应 / 流畅微动效
   ========================================================================== */

:root {
  --bg-dark: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-section-alt: #f8fafc;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --border-color: #e2e8f0;
  --border-focus: #0284c7;

  --primary: #0284c7;
  --primary-hover: #0369a1;
  --cyan: #0284c7;
  --cyan-hover: #0369a1;
  --accent: #7c3aed;
  --amber: #d97706;
  --emerald: #059669;

  --text-main: #0f172a;
  --text-sub: #475569;
  --text-muted: #64748b;

  --gradient-brand: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #7c3aed 100%);
  --gradient-text: linear-gradient(135deg, #0f172a 20%, #0284c7 60%, #2563eb 100%);
  --gradient-card-popular: linear-gradient(180deg, #f0fdfa 0%, #ffffff 100%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
  --shadow-card-hover: 0 12px 30px -4px rgba(15, 23, 42, 0.08), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 10px 25px -3px rgba(2, 132, 199, 0.15);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: #ffffff;
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background-color: #ffffff;
  background-image: 
    radial-gradient(circle at 12% 10%, rgba(2, 132, 199, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 88% 20%, rgba(37, 99, 235, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(124, 58, 237, 0.04) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: all 0.25s ease;
}

a:hover {
  color: var(--cyan-hover);
}

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

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

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.2);
  transition: transform 0.3s ease;
}

.logo-link:hover .logo-img {
  transform: scale(1.05) rotate(4deg);
}

.logo-text-box {
  display: flex;
  flex-direction: column;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.68rem;
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

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

.nav-links a {
  color: var(--text-sub);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--cyan);
}

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

.nav-pbn-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #059669 !important;
  font-size: 0.84rem;
  font-weight: 700;
  transition: all 0.25s ease;
}

.nav-pbn-btn:hover {
  background: #d1fae5;
  transform: translateY(-1px);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  background: var(--gradient-brand);
  color: #ffffff !important;
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.3);
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  background: #f1f5f9;
  border: 1px solid var(--border-color);
  color: var(--text-main) !important;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  background: #e2e8f0;
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 6px;
}

.mobile-nav-drawer {
  position: fixed;
  top: 78px;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--border-color);
  padding: 24px;
  display: none;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

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

.mobile-nav-drawer a {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 160px 0 90px 0;
  position: relative;
  overflow: hidden;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 24px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
  100% { opacity: 0.5; transform: scale(0.9); }
}

.hero-badge-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: #0284c7;
}

.hero-badge-tag {
  background: #e0f2fe;
  color: #0369a1;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 12px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1px;
  margin-bottom: 24px;
  color: var(--text-main);
}

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

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-sub);
  max-width: 780px;
  margin-bottom: 38px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

/* Hero Metrics Row */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-card);
  margin-top: 20px;
}

.metric-box {
  position: relative;
  text-align: center;
}

.metric-box:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -10px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: #e2e8f0;
}

.metric-val {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 6px;
  background: linear-gradient(180deg, #0f172a 30%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* ==========================================================================
   Section General Styles
   ========================================================================== */
.section-padding {
  padding: 100px 0;
}

.section-alt {
  background-color: var(--bg-section-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #0284c7;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text-main);
}

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

/* ==========================================================================
   Live Ping Monitor Section
   ========================================================================== */
.ping-board {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.ping-board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid #f1f5f9;
}

.ping-board-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.ping-board-badge {
  font-size: 0.78rem;
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
  padding: 3px 10px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.ping-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.ping-item {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.25s ease;
}

.ping-item:hover {
  background: #ffffff;
  border-color: var(--border-focus);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.08);
  transform: translateY(-2px);
}

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

.ping-flag {
  font-size: 1.6rem;
}

.ping-name {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-main);
}

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

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

.ping-val {
  font-size: 1.15rem;
  font-weight: 800;
  color: #059669;
}

.ping-bar-bg {
  width: 90px;
  height: 5px;
  background: #e2e8f0;
  border-radius: 4px;
  margin-top: 6px;
  overflow: hidden;
}

.ping-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #06b6d4);
  border-radius: 4px;
}

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

.bento-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  background: #ffffff;
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

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

.bento-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.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: 0.95rem;
  line-height: 1.65;
}

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

.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  position: relative;
}

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

.pricing-card.popular {
  background: var(--gradient-card-popular);
  border: 2px solid #0284c7;
  transform: scale(1.03);
  box-shadow: 0 12px 35px rgba(2, 132, 199, 0.15);
}

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

.popular-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: 0.74rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
  white-space: nowrap;
}

.plan-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

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

.plan-price-box {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f1f5f9;
}

.plan-price {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1;
}

.plan-price span {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--text-sub);
}

.plan-features li svg {
  width: 18px;
  height: 18px;
  color: #0284c7;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   Clients & Tutorials Section
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.client-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.client-item:hover {
  border-color: var(--cyan);
  background: #f8fafc;
  transform: translateY(-4px);
}

.client-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.client-name {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

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

/* ==========================================================================
   Articles Knowledge Base Section
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.article-card:hover {
  background: #ffffff;
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.article-badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  color: #0284c7;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: 14px;
}

.article-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.45;
}

.article-card h3 a {
  color: var(--text-main);
  transition: color 0.2s ease;
}

.article-card h3 a:hover {
  color: #0284c7;
}

.article-desc {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 16px;
  border-top: 1px solid #f1f5f9;
}

/* ==========================================================================
   Testimonials Section (用户评价)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.testimonial-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.testimonial-stars {
  color: #d97706;
  font-size: 1.05rem;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid #f1f5f9;
}

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

.user-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

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

/* ==========================================================================
   FAQ Section (常见问题)
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.faq-item.active {
  border-color: #0284c7;
  background: #f8fafc;
}

.faq-question {
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  user-select: none;
}

.faq-icon {
  font-size: 1.2rem;
  color: #0284c7;
  transition: transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  color: var(--text-sub);
  font-size: 0.93rem;
  line-height: 1.7;
  padding: 0 26px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 26px 22px 26px;
}

/* ==========================================================================
   Article Detail Page Template Specific Styles
   ========================================================================== */
.article-page-header {
  padding: 140px 0 50px 0;
  border-bottom: 1px solid var(--border-color);
  background: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.08), transparent 70%);
}

.article-body-content {
  max-width: 860px;
  margin: 50px auto 80px auto;
  font-size: 1.05rem;
  line-height: 1.9;
  color: #334155;
}

.article-body-content h2 {
  font-size: 1.8rem;
  color: var(--text-main);
  margin: 40px 0 20px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.article-body-content h3 {
  font-size: 1.35rem;
  color: #0284c7;
  margin: 30px 0 15px 0;
}

.article-body-content p {
  margin-bottom: 20px;
}

.article-body-content ul, .article-body-content ol {
  margin: 0 0 24px 24px;
}

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

.article-cta-box {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.06), rgba(37, 99, 235, 0.06));
  border: 1px solid #0284c7;
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  margin: 50px 0;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.08);
}

.article-cta-box h3 {
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 12px;
}

.article-nav-links {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   Footer & PBN Precise Weight Transfer Pipeline (核心任务 2)
   ========================================================================== */
.site-footer {
  background: #f8fafc;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-desc {
  max-width: 620px;
  margin: 0 auto 24px auto;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-copyright {
  margin-bottom: 20px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* PBN Friendly Links Area (友情链接区) - 低调、美观、小字号与原页面深度融合 */
.pbn-links-area {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px dashed #cbd5e1;
  font-size: 0.82rem;
  color: #64748b;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.pbn-links-title {
  color: #475569;
  font-weight: 600;
}

.pbn-link-item {
  color: #64748b !important;
  text-decoration: none;
  font-size: 0.82rem;
  transition: color 0.2s ease;
}

.pbn-link-item:hover {
  color: #0284c7 !important;
  text-decoration: underline;
}

/* ==========================================================================
   Mobile Responsive Adjustments
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .metrics-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .metric-box:not(:last-child)::after {
    display: none;
  }
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .nav-pbn-btn, .nav-actions .btn-primary {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .hero-section {
    padding: 120px 0 60px 0;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1.02rem;
  }
  .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;
  }
  .pricing-card.popular {
    transform: none;
  }
  .pricing-card.popular:hover {
    transform: none;
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-nav-links {
    flex-direction: column;
  }
  .section-title {
    font-size: 2rem;
  }
}