/* ==========================================================================
   神龙机场官网 (shenlongjc.homes) - 典雅奢华暗金风格样式表
   Design Inspiration: Scriptorium & The Vaulted Arch (Image 1)
   Color Palette: Deep Obsidian, Antique Gold, Crimson Accents, Sand Muted
   ========================================================================== */

:root {
  --bg-deep: #08090d;
  --bg-card: rgba(18, 20, 29, 0.75);
  --bg-card-hover: rgba(28, 32, 45, 0.88);
  --bg-elevated: #151823;
  --bg-glass: rgba(14, 16, 24, 0.65);

  --gold-primary: #d4af37;
  --gold-light: #f5d77f;
  --gold-dark: #9a7b20;
  --gold-glow: rgba(212, 175, 55, 0.28);
  --gold-border: rgba(212, 175, 55, 0.25);
  --gold-border-bright: rgba(212, 175, 55, 0.6);

  --crimson-accent: #9e2a2b;
  --crimson-bright: #b83232;
  --crimson-glow: rgba(184, 50, 50, 0.35);

  --text-main: #f0ede6;
  --text-muted: #a69f91;
  --text-dim: #706a5e;

  --font-serif: "Cinzel", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "Fira Code", Consolas, "Courier New", monospace;

  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-arch: 200px 200px 16px 16px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 0 25px rgba(212, 175, 55, 0.18), 0 10px 30px rgba(0, 0, 0, 0.7);
  --shadow-crimson: 0 0 25px rgba(184, 50, 50, 0.25), 0 10px 30px rgba(0, 0, 0, 0.7);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-deep);
}

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

/* 动态背景 Canvas */
#celestial-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85;
}

/* 顶部细微渐变氛围 */
.ambient-glow {
  position: fixed;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, rgba(184, 50, 50, 0.05) 40%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 9, 13, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gold-border);
  transition: var(--transition-normal);
}

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

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.logo-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.22) 0%, rgba(8, 9, 13, 0.9) 75%);
  border: 1px solid var(--gold-primary);
  box-shadow: 0 0 15px var(--gold-glow);
}

.logo-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--gold-light);
  fill: none;
}

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

.logo-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 2px;
  color: var(--gold-light);
  font-weight: 700;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 0.72rem;
  letter-spacing: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  padding: 6px 10px;
  position: relative;
  transition: var(--transition-fast);
  letter-spacing: 0.5px;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gold-primary);
  transition: var(--transition-normal);
  transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

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

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-normal);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-gold {
  background: linear-gradient(135deg, #d4af37 0%, #b89035 100%);
  color: #08090d;
  border-color: #f5d77f;
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.35);
}

.btn-gold:hover {
  background: linear-gradient(135deg, #f5d77f 0%, #d4af37 100%);
  box-shadow: 0 0 28px rgba(212, 175, 55, 0.6);
  transform: translateY(-2px);
}

.btn-gold-outline {
  background: transparent;
  color: var(--gold-light);
  border: 1px solid var(--gold-primary);
}

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

.btn-crimson {
  background: linear-gradient(135deg, #9e2a2b 0%, #751d1e 100%);
  color: #ffffff;
  border-color: #bd2d2d;
  box-shadow: 0 0 18px var(--crimson-glow);
}

.btn-crimson:hover {
  background: linear-gradient(135deg, #b83232 0%, #9e2a2b 100%);
  box-shadow: 0 0 28px rgba(184, 50, 50, 0.5);
  transform: translateY(-2px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gold-border);
  border-radius: var(--border-radius-sm);
  padding: 8px;
  color: var(--gold-primary);
  cursor: pointer;
}

/* ==========================================================================
   Hero Section - Scriptorium / Vaulted Arch Motif
   ========================================================================== */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-chapter-tag {
  font-family: var(--font-serif);
  color: var(--crimson-bright);
  font-size: 0.95rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-chapter-tag::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background-color: var(--crimson-bright);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.1rem;
  line-height: 1.25;
  color: var(--gold-light);
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}

.hero-title-accent {
  background: linear-gradient(120deg, #f5d77f 0%, #d4af37 60%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-divider {
  width: 80px;
  height: 3px;
  background: var(--crimson-bright);
  margin-bottom: 24px;
  box-shadow: 0 0 10px var(--crimson-glow);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 30px;
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid var(--gold-border);
  border-radius: 20px;
  font-size: 0.84rem;
  color: var(--gold-light);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #39e75f;
  box-shadow: 0 0 8px #39e75f;
}

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

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(212, 175, 55, 0.15);
}

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

.metric-number {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gold-light);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Vaulted Arch Frame Visual (Inspired by Image 1) */
.vault-arch-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  padding: 34px 28px 28px;
  background: radial-gradient(ellipse at center top, rgba(28, 30, 42, 0.9) 0%, rgba(10, 11, 16, 0.95) 80%);
  border: 1px solid var(--gold-border-bright);
  border-radius: var(--border-radius-arch);
  box-shadow: var(--shadow-gold), inset 0 0 30px rgba(212, 175, 55, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition-normal);
}

.vault-arch-card:hover {
  border-color: var(--gold-light);
  box-shadow: 0 0 35px rgba(212, 175, 55, 0.35), inset 0 0 40px rgba(212, 175, 55, 0.1);
  transform: translateY(-4px);
}

.vault-rose-window {
  width: 220px;
  height: 220px;
  margin: 15px auto 25px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vault-rose-window svg {
  width: 100%;
  height: 100%;
  animation: slow-rotate 120s linear infinite;
}

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

.vault-rose-center {
  position: absolute;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: radial-gradient(circle, #b83232 0%, #681818 80%);
  border: 2px solid var(--gold-primary);
  box-shadow: 0 0 20px rgba(184, 50, 50, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
}

.vault-rose-center svg {
  width: 24px;
  height: 24px;
  stroke: var(--gold-light);
  animation: none;
}

.vault-plate-label {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 4px;
  color: var(--gold-light);
  text-transform: uppercase;
  margin-top: 15px;
}

.vault-info-box {
  width: 100%;
  background: rgba(15, 17, 24, 0.7);
  border: 1px solid var(--gold-border);
  border-radius: var(--border-radius-md);
  padding: 16px;
  margin-top: 18px;
  text-align: left;
}

.vault-info-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 4px 0;
  border-bottom: 1px dashed rgba(212, 175, 55, 0.12);
}

.vault-info-row:last-child {
  border-bottom: none;
}

.vault-info-label {
  color: var(--text-muted);
}

.vault-info-val {
  color: var(--gold-light);
  font-weight: 600;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section {
  padding: 90px 0;
  position: relative;
}

.section-alt {
  background: rgba(14, 16, 24, 0.5);
  border-top: 1px solid rgba(212, 175, 55, 0.1);
  border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 55px;
}

.section-pretitle {
  font-family: var(--font-serif);
  color: var(--crimson-bright);
  font-size: 0.88rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-block;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  color: var(--gold-light);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-line {
  width: 60px;
  height: 2px;
  background: var(--crimson-bright);
  margin: 0 auto 16px;
  box-shadow: 0 0 8px var(--crimson-glow);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Core Selling Points (6 Pillars)
   ========================================================================== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

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

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
  opacity: 0;
  transition: var(--transition-normal);
}

.pillar-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--gold-border-bright);
  transform: translateY(-6px);
  box-shadow: var(--shadow-gold);
}

.pillar-card:hover::before {
  opacity: 1;
}

.pillar-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--border-radius-md);
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--gold-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--gold-light);
  box-shadow: 0 0 15px var(--gold-glow);
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--gold-light);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.pillar-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   Pricing Section (Matching User Specific Pricing)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--gold-border);
  border-radius: var(--border-radius-lg);
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--gold-light);
  box-shadow: var(--shadow-gold);
}

.pricing-card.featured {
  border: 2px solid var(--gold-primary);
  background: radial-gradient(ellipse at top center, rgba(35, 38, 54, 0.9) 0%, rgba(14, 16, 24, 0.95) 100%);
  box-shadow: var(--shadow-gold);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #b83232 0%, #8c2424 100%);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 5px 18px;
  border-radius: 20px;
  border: 1px solid #ff7b7b;
  box-shadow: 0 0 15px rgba(184, 50, 50, 0.6);
  text-transform: uppercase;
}

.pricing-header {
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  padding-bottom: 24px;
  margin-bottom: 24px;
  text-align: center;
}

.plan-name {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--gold-light);
  margin-bottom: 14px;
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.currency {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--gold-primary);
}

.amount {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
}

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

.plan-meta-tags {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 14px;
}

.meta-tag {
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(212, 175, 55, 0.1);
  color: var(--gold-light);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.pricing-feature-list {
  list-style: none;
  margin-bottom: 30px;
  flex-grow: 1;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 13px;
  line-height: 1.5;
}

.feature-icon {
  font-size: 1.05rem;
  line-height: 1;
  flex-shrink: 0;
}

.feature-item strong {
  color: var(--text-main);
}

.pricing-periods-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: 12px;
}

/* ==========================================================================
   Clients Section (全平台客户端)
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--gold-border);
  border-radius: var(--border-radius-md);
  padding: 26px 20px;
  text-align: center;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.client-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--gold-light);
  transform: translateY(-5px);
  box-shadow: var(--shadow-gold);
}

.client-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--gold-light);
  border: 1px solid var(--gold-border);
}

.client-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--gold-light);
  margin-bottom: 6px;
}

.client-apps {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.5;
}

.client-action-btn {
  margin-top: auto;
  font-size: 0.82rem;
  padding: 6px 14px;
}

/* ==========================================================================
   AI Tools & Knowledge Base Showcases
   ========================================================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.showcase-box {
  background: var(--bg-card);
  border: 1px solid var(--gold-border);
  border-radius: var(--border-radius-lg);
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
}

.showcase-title-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.showcase-badge-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  background: rgba(184, 50, 50, 0.15);
  border: 1px solid var(--crimson-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ff8585;
}

.showcase-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--gold-light);
}

.showcase-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 22px;
}

.ai-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ai-chip {
  padding: 6px 14px;
  background: rgba(15, 17, 24, 0.9);
  border: 1px solid var(--gold-border);
  border-radius: 6px;
  font-size: 0.84rem;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ai-chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-primary);
}

/* ==========================================================================
   Interactive FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item:hover {
  border-color: var(--gold-border-bright);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  color: var(--gold-light);
  font-family: var(--font-serif);
  font-size: 1.08rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.faq-question:hover {
  color: #fff;
}

.faq-icon {
  font-size: 1.3rem;
  color: var(--gold-primary);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  margin-left: 14px;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--crimson-bright);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
  padding: 0 24px;
  background: rgba(10, 12, 18, 0.5);
}

.faq-answer-inner {
  padding: 16px 0 22px;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.85;
  border-top: 1px dashed rgba(212, 175, 55, 0.15);
}

/* ==========================================================================
   12 In-Depth 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(--gold-border);
  border-radius: var(--border-radius-md);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
  text-decoration: none;
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--gold-light);
  transform: translateY(-5px);
  box-shadow: var(--shadow-gold);
}

.article-tag-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.article-tag {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--crimson-bright);
  font-weight: 700;
}

.article-read-time {
  font-size: 0.74rem;
  color: var(--text-dim);
}

.article-card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--gold-light);
  line-height: 1.45;
  margin-bottom: 12px;
  transition: var(--transition-fast);
}

.article-card:hover .article-card-title {
  color: #fff;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(212, 175, 55, 0.12);
  font-size: 0.82rem;
  color: var(--gold-primary);
  font-weight: 600;
}

.article-card-footer span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: transform var(--transition-fast);
}

.article-card:hover .article-card-footer span {
  transform: translateX(4px);
}

/* ==========================================================================
   Article Detail Page Layout
   ========================================================================== */
.article-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  margin-bottom: 40px;
}

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

.breadcrumbs a {
  color: var(--gold-primary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.article-main-title {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  line-height: 1.3;
  color: var(--gold-light);
  margin-bottom: 20px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.86rem;
  color: var(--text-muted);
}

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

.article-layout {
  display: grid;
  grid-template-columns: 2.8fr 1.2fr;
  gap: 40px;
  align-items: start;
}

.article-content {
  font-size: 1.04rem;
  line-height: 1.95;
  color: var(--text-main);
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  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: 12px;
}

.article-content h2::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 24px;
  background: var(--crimson-bright);
}

.article-content h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--gold-primary);
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 22px;
  color: #dfdbd2;
}

.article-content ul,
.article-content ol {
  margin: 0 0 24px 28px;
  color: #dfdbd2;
}

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

.article-content strong {
  color: var(--gold-light);
}

.article-content blockquote {
  border-left: 3px solid var(--gold-primary);
  background: rgba(212, 175, 55, 0.06);
  padding: 16px 22px;
  margin: 26px 0;
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  color: var(--text-muted);
  font-style: italic;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--gold-border);
}

.article-content th,
.article-content td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid rgba(212, 175, 55, 0.1);
  font-size: 0.94rem;
}

.article-content th {
  background: rgba(212, 175, 55, 0.12);
  color: var(--gold-light);
  font-family: var(--font-serif);
  font-weight: 600;
}

.article-content pre {
  background: #0d0f16;
  border: 1px solid var(--gold-border);
  border-radius: var(--border-radius-md);
  padding: 20px;
  overflow-x: auto;
  margin: 26px 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: #cfd6e6;
}

.article-content code {
  font-family: var(--font-mono);
  background: rgba(212, 175, 55, 0.12);
  color: var(--gold-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

/* 侧边栏与内部跳转区 */
.article-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

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

.sidebar-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--gold-light);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

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

.sidebar-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
}

.sidebar-link:hover {
  color: var(--gold-light);
  transform: translateX(4px);
}

/* Call to action banners inside article */
.article-cta-box {
  background: radial-gradient(ellipse at center, rgba(38, 30, 20, 0.85) 0%, rgba(14, 16, 24, 0.95) 100%);
  border: 1px solid var(--gold-border-bright);
  border-radius: var(--border-radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0;
  box-shadow: var(--shadow-gold);
}

.article-cta-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--gold-light);
  margin-bottom: 10px;
}

.article-cta-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #06070a;
  border-top: 1px solid var(--gold-border);
  padding: 70px 0 35px;
  position: relative;
  z-index: 2;
}

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

.footer-col-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 16px 0 20px;
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--gold-light);
  letter-spacing: 1px;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--crimson-bright);
}

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

.footer-links a {
  color: var(--text-muted);
  font-size: 0.88rem;
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--gold-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(212, 175, 55, 0.1);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright strong {
  color: var(--gold-primary);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-divider {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-badges-row,
  .hero-cta-group {
    justify-content: center;
  }
  .pillars-grid,
  .pricing-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu,
  .nav-actions {
    display: none;
  }
  .nav-menu.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #090a0f;
    border-bottom: 1px solid var(--gold-border);
    padding: 20px;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.3rem;
  }
  .pillars-grid,
  .pricing-grid,
  .articles-grid,
  .showcase-grid,
  .clients-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}