/* ==========================================================================
   TAG 机场官网 (tag-jc.homes) - Luxury Dark Aesthetic Stylesheet
   Designed based on Scriptorium Dark Gold & Crimson Arch Visual System
   ========================================================================== */

:root {
  --bg-primary: #0b0b0e;
  --bg-secondary: #121217;
  --bg-card: rgba(22, 22, 29, 0.82);
  --bg-card-hover: rgba(30, 30, 40, 0.95);
  --bg-glass: rgba(18, 18, 24, 0.7);

  --text-primary: #f5f4ef;
  --text-secondary: #b5b3aa;
  --text-muted: #75746f;
  --text-accent: #e6c280;

  --gold-primary: #d4af37;
  --gold-light: #f3df9b;
  --gold-dark: #9a7b20;
  --gold-border: rgba(212, 175, 55, 0.28);
  --gold-glow: rgba(212, 175, 55, 0.18);

  --crimson-primary: #e63946;
  --crimson-dark: #b81424;
  --crimson-badge: #d32f2f;

  --border-light: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(212, 175, 55, 0.35);

  --font-serif: "Cinzel", "Playfair Display", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, "Courier New", monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-arch: 140px 140px 16px 16px;

  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 30px rgba(212, 175, 55, 0.15);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Dynamic Canvas Background */
#ambient-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

/* Base Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typographic Accents */
h1, h2, h3, h4, .serif-title {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
}

.gold-text {
  color: var(--gold-primary);
  background: linear-gradient(135deg, #fff7d6 0%, #d4af37 60%, #aa8214 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.crimson-line {
  display: inline-block;
  width: 60px;
  height: 3px;
  background: var(--crimson-badge);
  margin: 8px 0 20px;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 14, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-symbol {
  width: 38px;
  height: 38px;
  border: 1.5px solid var(--gold-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: 0 0 15px var(--gold-glow);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #f7eed8;
}

.brand-name span {
  color: var(--crimson-primary);
  font-size: 0.85rem;
  margin-left: 4px;
  letter-spacing: 0.12em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gold-primary);
  transition: width 0.3s ease;
}

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

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #e63946 0%, #ba1826 100%);
  color: #fff !important;
  text-decoration: none;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 18px rgba(230, 57, 70, 0.4);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(230, 57, 70, 0.65);
  filter: brightness(1.1);
}

.btn-gold-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--gold-primary) !important;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid var(--gold-primary);
  transition: var(--transition);
}

.btn-gold-outline:hover {
  background: rgba(212, 175, 55, 0.12);
  box-shadow: 0 0 20px var(--gold-glow);
  transform: translateY(-2px);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* Hero Section (Figure 1 Style) */
.hero-section {
  padding: 70px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 60px;
  align-items: center;
}

.hero-chapter-tag {
  color: var(--crimson-primary);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-chapter-tag::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--crimson-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--crimson-primary);
}

.hero-title {
  font-size: 3.4rem;
  line-height: 1.15;
  margin-bottom: 16px;
  font-family: var(--font-serif);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 600px;
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.badge-item svg {
  color: var(--gold-primary);
}

.hero-cta-box {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* Vaulted Arch Card (Faithful to Plate II Rose in Figure 1) */
.vault-arch-card {
  position: relative;
  background: radial-gradient(circle at 50% 30%, #201a24 0%, #111116 80%);
  border: 1.5px solid var(--gold-border);
  border-radius: var(--radius-arch);
  padding: 40px 30px 36px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(212, 175, 55, 0.1);
  overflow: hidden;
  transition: var(--transition);
}

.vault-arch-card:hover {
  border-color: var(--gold-primary);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.9), 0 0 45px rgba(212, 175, 55, 0.22);
}

.arch-rose-svg {
  width: 220px;
  height: 220px;
  margin: 10px auto 25px;
  animation: rotateSlow 80s linear infinite;
  display: block;
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.arch-tag-line {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  color: var(--gold-primary);
  text-transform: uppercase;
  margin-top: 15px;
}

.arch-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.arch-stat-val {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--gold-light);
  font-weight: 700;
}

.arch-stat-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* Feature Highlights Grid */
.section {
  padding: 85px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 55px;
}

.section-eyebrow {
  font-family: var(--font-serif);
  color: var(--gold-primary);
  font-size: 0.88rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 2.35rem;
  margin-bottom: 12px;
}

.section-desc {
  max-width: 680px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.02rem;
}

/* Grid of features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

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

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

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: #fff;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Pricing Section (Carefully recreates Figure 2) */
.pricing-section {
  background: linear-gradient(180deg, rgba(14, 14, 18, 0.6) 0%, rgba(10, 10, 13, 0.9) 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: #18191d;
  border: 1.5px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 36px 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.pricing-card.featured {
  border-color: rgba(230, 57, 70, 0.5);
  background: #1b1b22;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 35px rgba(230, 57, 70, 0.15);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold-primary);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85), 0 0 35px var(--gold-glow);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f24e38 0%, #d82b1b 100%);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 20px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(216, 43, 27, 0.5);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.pricing-header {
  margin-bottom: 24px;
}

.plan-name {
  font-size: 1.65rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  font-family: var(--font-sans);
}

.billing-cycle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.price-box {
  display: flex;
  align-items: baseline;
  margin-top: 12px;
}

.currency {
  font-size: 1.8rem;
  font-weight: 800;
  color: #e63946;
  margin-right: 2px;
}

.amount {
  font-size: 3rem;
  font-weight: 800;
  color: #e63946;
  line-height: 1;
}

.period {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-left: 4px;
}

/* Pricing meta stat box (流量 & 每GB价格) */
.plan-stat-box {
  background: #23242b;
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.stat-item.right {
  align-items: flex-end;
}

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

.stat-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.stat-val.gold {
  color: #f5f4ef;
}

/* Feature list */
.plan-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  color: #ddd;
  margin-bottom: 14px;
}

.plan-features li svg {
  color: #e63946;
  flex-shrink: 0;
}

.btn-plan-buy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: linear-gradient(135deg, #e63946 0%, #cf2634 100%);
  color: #fff;
  text-decoration: none;
  padding: 14px;
  border-radius: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  box-shadow: 0 4px 18px rgba(230, 57, 70, 0.45);
  transition: var(--transition);
  cursor: pointer;
}

.btn-plan-buy:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(230, 57, 70, 0.7);
  filter: brightness(1.1);
}

/* Client & Platforms Section */
.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}

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

.client-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  flex-shrink: 0;
}

.client-info h4 {
  font-size: 1.08rem;
  margin-bottom: 6px;
  color: #fff;
}

.client-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 10px;
}

.client-tag-badge {
  display: inline-block;
  font-size: 0.75rem;
  background: rgba(212, 175, 55, 0.1);
  color: var(--gold-light);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(212, 175, 55, 0.2);
}

/* AI Tools & Knowledge Base Section */
.ai-showcase-box {
  background: radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.08) 0%, rgba(18, 18, 24, 0.95) 100%);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius-lg);
  padding: 45px 40px;
  box-shadow: var(--shadow-card);
  margin-bottom: 40px;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.ai-item-card {
  background: rgba(10, 10, 14, 0.7);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  text-align: center;
  transition: var(--transition);
}

.ai-item-card:hover {
  border-color: var(--gold-primary);
  transform: translateY(-3px);
  background: rgba(25, 25, 33, 0.9);
}

.ai-item-logo {
  width: 50px;
  height: 50px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.ai-item-title {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 6px;
  font-weight: 600;
}

.ai-item-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* FAQ Accordion Section (Supports 50 FAQs with instant search filter) */
.faq-search-wrapper {
  max-width: 650px;
  margin: 0 auto 40px;
  position: relative;
}

.faq-search-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  padding: 16px 20px 16px 48px;
  border-radius: 30px;
  color: #fff;
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.faq-search-input:focus {
  border-color: var(--gold-primary);
  box-shadow: 0 0 20px var(--gold-glow);
}

.faq-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold-primary);
}

.faq-categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 35px;
}

.faq-cat-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition);
}

.faq-cat-btn:hover, .faq-cat-btn.active {
  background: var(--gold-primary);
  color: #0c0c0e;
  font-weight: 600;
  border-color: var(--gold-primary);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--gold-border);
  background: var(--bg-card-hover);
}

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

.faq-q-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: #f0eee6;
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-q-badge {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  color: var(--gold-primary);
  background: rgba(212, 175, 55, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.faq-chevron {
  color: var(--gold-primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  padding: 0 24px 22px;
  max-height: 600px;
}

/* Articles Directory Grid (9 Articles) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  text-decoration: none;
}

.article-card:hover {
  border-color: var(--gold-primary);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.article-card-header {
  height: 140px;
  background: linear-gradient(135deg, #1f1b26 0%, #111116 100%);
  position: relative;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.article-card-header-icon {
  font-size: 2.5rem;
  color: var(--gold-primary);
  opacity: 0.85;
}

.article-card-tag {
  position: absolute;
  top: 14px;
  left: 16px;
  background: rgba(230, 57, 70, 0.2);
  color: #ff6b77;
  border: 1px solid rgba(230, 57, 70, 0.4);
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 12px;
}

.article-card-body {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-title {
  font-size: 1.22rem;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.45;
  font-weight: 600;
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-read-more {
  color: var(--gold-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Article Detail Page Layout */
.article-page-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border-light);
  background: radial-gradient(circle at 50% 10%, rgba(212, 175, 55, 0.06) 0%, transparent 70%);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumbs a:hover {
  color: var(--gold-primary);
}

.article-main-title {
  font-size: 2.6rem;
  line-height: 1.25;
  margin-bottom: 20px;
  color: #fff;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding-bottom: 10px;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.article-body {
  color: #d8d6ce;
  font-size: 1.05rem;
  line-height: 1.95;
}

.article-body h2 {
  font-size: 1.75rem;
  color: var(--gold-light);
  margin: 45px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h2::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 24px;
  background: var(--crimson-primary);
  border-radius: 2px;
}

.article-body h3 {
  font-size: 1.35rem;
  color: #fff;
  margin: 30px 0 16px;
}

.article-body p {
  margin-bottom: 22px;
}

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

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

.article-body strong {
  color: #fff;
}

.article-body blockquote {
  background: rgba(212, 175, 55, 0.05);
  border-left: 4px solid var(--gold-primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 30px 0;
  font-style: italic;
  color: #ece8db;
}

.article-body .callout-box {
  background: linear-gradient(135deg, rgba(230, 57, 70, 0.12) 0%, rgba(20, 20, 26, 0.8) 100%);
  border: 1px solid rgba(230, 57, 70, 0.35);
  border-radius: var(--radius-md);
  padding: 26px;
  margin: 35px 0;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.article-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

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

.sidebar-title {
  font-size: 1.15rem;
  color: var(--gold-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.sidebar-links li {
  margin-bottom: 12px;
}

.sidebar-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  display: block;
  transition: var(--transition);
}

.sidebar-links a:hover {
  color: var(--gold-primary);
  transform: translateX(4px);
}

/* Call to action bar */
.cta-banner {
  background: radial-gradient(circle at 50% 50%, #291a24 0%, #121217 100%);
  border: 1.5px solid var(--gold-border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card), 0 0 40px rgba(212, 175, 55, 0.15);
  margin: 80px 0 40px;
}

.cta-banner-title {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.cta-banner-desc {
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 30px;
  font-size: 1.05rem;
}

/* Footer */
.site-footer {
  background: #08080a;
  border-top: 1px solid var(--border-light);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h5 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 18px;
  font-family: var(--font-serif);
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--gold-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 25px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.geo-meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 10px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-chapter-tag, .hero-cta-box {
    justify-content: center;
  }
  .hero-subtitle {
    margin: 0 auto 30px;
  }
  .hero-badges-row {
    justify-content: center;
  }
  .vault-arch-card {
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .article-content-wrapper {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #111116;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    gap: 16px;
  }
  .main-nav.active {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 2.3rem;
  }
  .section-title {
    font-size: 1.85rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
}