/* ========================================================
   贝贝云 (BEIBEIYUN.CLICK) 官网官方设计规范与样式体系
   暗黑星云科技风 / 完美还原定价卡片 / 适配移动端与全终端
   ======================================================== */

:root {
  --bg-main: #090d16;
  --bg-secondary: #0f1523;
  --bg-card: #151a26;
  --bg-card-hover: #1b2232;
  --bg-input: #121824;
  
  --border-subtle: #222b3d;
  --border-card: #28334a;
  --border-focus: #8b5cf6;
  
  --text-main: #ffffff;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  
  --primary-cyan: #00d2ff;
  --primary-purple: #8b5cf6;
  --primary-pink: #ec4899;
  --accent-gold: #f59e0b;
  --success-green: #10b981;
  
  --card-radius: 18px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(139, 92, 246, 0.35);
  --shadow-cyan: 0 0 25px rgba(0, 210, 255, 0.35);
}

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

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

body {
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  background: radial-gradient(circle at 50% 0%, #171b30 0%, #090d16 70%);
}

/* Background Animated Canvas */
#star-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.site-wrapper {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

img, svg {
  vertical-align: middle;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================================
   HEADER / NAVBAR
   ======================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-normal);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.brand-logo-img {
  height: 40px;
  width: auto;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-cyan), var(--primary-purple));
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-align: center;
  white-space: nowrap;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
  border-radius: 8px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
  border-radius: 12px;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-card);
  color: var(--text-main);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.btn-gradient {
  background: linear-gradient(135deg, #00d2ff 0%, #8b5cf6 50%, #ec4899 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(139, 92, 246, 0.3);
}

.btn-gradient:hover {
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.5);
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-gradient-featured {
  background: linear-gradient(135deg, #00c6ff 0%, #7f00ff 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(0, 198, 255, 0.35);
}

.btn-gradient-featured:hover {
  box-shadow: 0 6px 26px rgba(127, 0, 255, 0.6);
  transform: translateY(-2px);
  filter: brightness(1.12);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 8px;
}

/* ========================================================
   HERO SECTION
   ======================================================== */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 9999px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: #c4b5fd;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-pill-sparkle {
  color: var(--primary-cyan);
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #00d2ff 0%, #a855f7 50%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-keywords-tagline {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}

.keyword-tag {
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: #94a3b8;
}

.keyword-tag.highlight {
  border-color: rgba(0, 210, 255, 0.35);
  color: #7dd3fc;
  background: rgba(0, 210, 255, 0.08);
}

.hero-cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
  border-radius: 16px;
  background: rgba(21, 26, 38, 0.6);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(10px);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
}

.stat-number.cyan { color: var(--primary-cyan); }
.stat-number.purple { color: #a855f7; }
.stat-number.pink { color: var(--primary-pink); }
.stat-number.green { color: var(--success-green); }

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dark);
}

/* ========================================================
   SECTION COMMON
   ======================================================== */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
}

/* ========================================================
   PRICING SECTION (MATCHING SCREENSHOT)
   ======================================================== */
.pricing-section {
  padding: 60px 0 90px;
  background: radial-gradient(ellipse at bottom, rgba(30, 27, 75, 0.3) 0%, transparent 70%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  background: #141924;
  border: 1px solid #232c3d;
  border-radius: var(--card-radius);
  padding: 32px 20px 24px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  text-align: center;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: #38455e;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

/* Top Title */
.plan-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

/* Billing Cycle Pill */
.cycle-badge {
  display: inline-block;
  align-self: center;
  padding: 4px 14px;
  background: #232a3a;
  border-radius: 999px;
  font-size: 0.78rem;
  color: #94a3b8;
  font-weight: 500;
  margin-bottom: 20px;
}

/* Main Price */
.price-box {
  margin-bottom: 18px;
}

.main-price {
  font-size: 2.6rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.sub-price {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: 6px;
}

/* Middle Cost Badge Box */
.cost-perf-box {
  background: #1c2333;
  border-radius: 10px;
  padding: 10px 8px;
  margin-bottom: 24px;
  border: 1px solid #242e42;
}

.cost-label {
  font-size: 0.72rem;
  color: #818cf8;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.cost-value {
  font-size: 1.15rem;
  font-weight: 800;
  color: #a78bfa;
}

/* Feature List */
.features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  margin-bottom: 28px;
  flex-grow: 1;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  color: #cbd5e1;
}

.feature-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: #a78bfa;
}

/* Plan Button */
.plan-btn {
  width: 100%;
  padding: 13px 0;
  background: #1d2536;
  color: #ffffff;
  border: 1px solid #2b364c;
  border-radius: 12px;
  font-size: 0.96rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.plan-btn:hover {
  background: #28334a;
  border-color: #4b5a77;
  color: #ffffff;
  transform: translateY(-2px);
}

/* ========================================================
   FEATURED CARD (1000G / 最优套餐)
   ======================================================== */
.pricing-card.featured {
  background: linear-gradient(180deg, #181934 0%, #111422 100%);
  border: 2px solid #8b5cf6;
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.35);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-4px);
  box-shadow: 0 0 45px rgba(139, 92, 246, 0.55);
}

/* Optimal Badge (Floating on top) */
.featured-badge {
  position: absolute;
  top: -24px;
  right: 18px;
  background: linear-gradient(135deg, #00d2ff 0%, #8b5cf6 100%);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.4);
  letter-spacing: 0.02em;
}

.featured .plan-title {
  color: #ffffff;
}

.featured .main-price {
  background: linear-gradient(90deg, #00d2ff 0%, #dc2bf9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.featured .cost-perf-box {
  background: rgba(0, 210, 255, 0.08);
  border-color: rgba(0, 210, 255, 0.25);
}

.featured .cost-label {
  color: #38bdf8;
}

.featured .cost-value {
  color: #00d2ff;
}

.featured .feature-icon {
  color: #00d2ff;
}

.featured .plan-btn {
  background: linear-gradient(135deg, #00c6ff 0%, #7f00ff 100%);
  border: none;
  box-shadow: 0 4px 18px rgba(0, 198, 255, 0.4);
}

.featured .plan-btn:hover {
  filter: brightness(1.15);
  box-shadow: 0 6px 24px rgba(127, 0, 255, 0.65);
}

/* ========================================================
   SERVICE RULES & ATTENTION BANNER
   ======================================================== */
.rules-banner {
  margin-top: 40px;
  padding: 20px 28px;
  border-radius: 14px;
  background: rgba(22, 28, 41, 0.7);
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.rules-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-body);
}

.rule-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.rule-badge svg {
  color: var(--primary-cyan);
}

/* ========================================================
   CORE FEATURES & ARCHITECTURE
   ======================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 32px 28px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.feature-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-cyan), var(--primary-purple));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-box:hover::before {
  opacity: 1;
}

.feature-box-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary-purple);
}

.feature-box-icon.cyan {
  background: rgba(0, 210, 255, 0.12);
  color: var(--primary-cyan);
}

.feature-box-icon.pink {
  background: rgba(236, 72, 153, 0.12);
  color: var(--primary-pink);
}

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

.feature-box-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========================================================
   CLIENT TUTORIAL & SUPPORT (Clash, ClashParty etc.)
   ======================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px;
  text-align: center;
  transition: var(--transition-fast);
}

.client-card:hover {
  border-color: var(--primary-purple);
  transform: translateY(-3px);
}

.client-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: #1e2536;
  color: var(--primary-cyan);
}

.client-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.client-desc {
  font-size: 0.825rem;
  color: var(--text-dark);
  margin-bottom: 16px;
}

/* ========================================================
   ARTICLES & KNOWLEDGE HUB (SEO INTERNAL LINKING)
   ======================================================== */
.articles-section {
  padding: 70px 0;
  background: rgba(15, 21, 35, 0.4);
}

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

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.78rem;
}

.article-tag {
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(139, 92, 246, 0.15);
  color: #c4b5fd;
  font-weight: 600;
}

.article-date {
  color: var(--text-dark);
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  line-height: 1.45;
  transition: color var(--transition-fast);
}

.article-card:hover .article-title {
  color: var(--primary-cyan);
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary-cyan);
}

.article-link:hover {
  gap: 10px;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-fast);
}

.review-card:hover {
  border-color: var(--border-card);
  transform: translateY(-3px);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-cyan), var(--primary-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1.1rem;
}

.review-user-info {
  flex-grow: 1;
}

.review-username {
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
}

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

.review-stars {
  color: var(--accent-gold);
  font-size: 0.9rem;
  letter-spacing: 2px;
}

.review-comment {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.7;
  font-style: normal;
}

.review-plan-badge {
  margin-top: 16px;
  align-self: flex-start;
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

/* ========================================================
   FAQ SECTION (常见问题解答)
   ======================================================== */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px 0;
}

.faq-item:first-child {
  border-top: 1px solid var(--border-subtle);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  user-select: none;
}

.faq-q-text {
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
  transition: color var(--transition-fast);
}

.faq-question:hover .faq-q-text {
  color: var(--primary-cyan);
}

.faq-toggle-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: transform var(--transition-normal), background var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  background: rgba(0, 210, 255, 0.15);
  color: var(--primary-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-a-content {
  padding-top: 14px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ========================================================
   BOTTOM CTA SECTION
   ======================================================== */
.bottom-cta-section {
  padding: 80px 0;
  background: radial-gradient(circle at center, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  text-align: center;
}

.bottom-cta-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 50px 36px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(22, 28, 43, 0.95) 0%, rgba(15, 20, 31, 0.95) 100%);
  border: 1px solid var(--border-card);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.bottom-cta-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.bottom-cta-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
}

/* ========================================================
   FOOTER & PBN LINKS (STRICT SEO DOFOLLOW)
   ======================================================== */
.site-footer {
  background: #060910;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 35px;
  color: var(--text-muted);
  font-size: 0.88rem;
  position: relative;
  z-index: 10;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 360px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-cyan);
}

/* PBN Friendly Links - STRICT DOFOLLOW BAR */
.footer-pbn-bar {
  border-top: 1px solid #1a2233;
  border-bottom: 1px solid #1a2233;
  padding: 20px 0;
  margin-bottom: 28px;
  text-align: center;
}

.pbn-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px 24px;
}

.pbn-label {
  font-size: 0.84rem;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pbn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: #94a3b8;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.pbn-link:hover {
  color: #38bdf8;
  text-decoration: underline;
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-dark);
}

.copyright-text {
  color: var(--text-dark);
}

.footer-badges {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  font-size: 0.75rem;
}

/* ========================================================
   ARTICLE DETAIL PAGE STYLING
   ======================================================== */
.article-page-header {
  padding: 60px 0 30px;
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.breadcrumb-sep {
  color: #475569;
}

.article-hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.article-body-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  padding: 50px 0 80px;
}

.article-content {
  font-size: 1.05rem;
  color: #d1d5db;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.7rem;
  font-weight: 800;
  color: #ffffff;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 28px 0 12px;
}

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

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

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

.article-content blockquote {
  border-left: 4px solid var(--primary-purple);
  padding: 14px 20px;
  background: rgba(139, 92, 246, 0.08);
  border-radius: 0 10px 10px 0;
  margin: 24px 0;
  color: #e2e8f0;
}

.article-content a {
  color: var(--primary-cyan);
  text-decoration: underline;
}

.article-content a:hover {
  color: #7dd3fc;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 24px;
}

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.sidebar-link:hover {
  color: var(--primary-cyan);
}

/* ========================================================
   RESPONSIVE DESIGN (MOBILE & TABLET ADAPTATION)
   ======================================================== */
@media (max-width: 1100px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .pricing-card.featured {
    grid-column: span 1;
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 900px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .articles-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .article-body-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #090d16;
    border-bottom: 1px solid var(--border-card);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    display: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }
  .features-grid, .articles-grid, .reviews-grid, .clients-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    padding: 16px;
  }
  .hero-cta-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-buttons .btn {
    width: 100%;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
}