/* ==========================================================================
   FlowerCloud (huayun-jc.click) - Design System & Grimoire Tech Styling
   Theme: Midnight Navy / Neon Amber Gold / Sci-Fi HUD Radar Aesthetic
   ========================================================================== */

:root {
  --bg-primary: #070a14;
  --bg-secondary: #0c1224;
  --bg-card: #101932;
  --bg-card-hover: #162244;
  --bg-glass: rgba(16, 25, 50, 0.75);
  --bg-input: #0a0e1c;
  
  --border-subtle: rgba(70, 95, 155, 0.25);
  --border-gold: rgba(245, 158, 11, 0.45);
  --border-gold-bright: #fbbf24;
  --border-active: #f59e0b;
  
  --accent-gold: #f59e0b;
  --accent-gold-light: #fbbf24;
  --accent-gold-dark: #b45309;
  --accent-cyan: #38bdf8;
  --accent-purple: #818cf8;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-gold: #fbbf24;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --shadow-gold: 0 0 25px rgba(245, 158, 11, 0.18);
  --shadow-box: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background: 
    radial-gradient(circle at 15% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(56, 189, 248, 0.04) 0%, transparent 50%),
    linear-gradient(180deg, #070a14 0%, #0a0f20 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* Background Cyber Grid Lines */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(rgba(245, 158, 11, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 158, 11, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 10, 20, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.site-header.scrolled {
  border-bottom-color: var(--border-gold);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

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

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--accent-gold);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-gold);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.25);
  position: relative;
  overflow: hidden;
}

.brand-icon::after {
  content: "";
  position: absolute;
  width: 140%;
  height: 2px;
  background: var(--accent-gold-light);
  transform: rotate(45deg);
}

.site-brand span {
  color: var(--accent-gold);
  font-size: 0.85em;
  padding-left: 4px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 2px;
  transition: var(--transition);
}

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

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

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

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #070a14;
  font-weight: 700;
  padding: 9px 22px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  border: 1px solid #fbbf24;
  cursor: pointer;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.35);
  transition: var(--transition);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(245, 158, 11, 0.55);
  filter: brightness(1.1);
  color: #000;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--accent-gold);
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  border: 1px solid var(--border-gold);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(245, 158, 11, 0.12);
  border-color: var(--accent-gold-light);
  color: #fff;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-primary);
  padding: 8px 12px;
  font-size: 1.25rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section with Grimoire HUD Aesthetic
   ========================================================================== */
.hero-section {
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--border-gold);
  font-size: 0.82rem;
  color: var(--accent-gold);
  font-family: var(--font-mono);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: 3rem;
  line-height: 1.18;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-title span {
  background: linear-gradient(120deg, #fbbf24 20%, #f59e0b 60%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2.2rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-item .val {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-gold);
  font-family: var(--font-mono);
}

.metric-item .lbl {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Grimoire Circle HUD Display (Echoing Image 2) */
.grimoire-hud-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-box), 0 0 35px rgba(245, 158, 11, 0.12);
  position: relative;
  overflow: hidden;
}

.grimoire-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
}

.grimoire-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.grimoire-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #34d399;
  font-family: var(--font-mono);
}

.grimoire-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
}

.hud-radar-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem 0;
  position: relative;
}

.hud-radar-svg {
  width: 220px;
  height: 220px;
  transform-origin: center;
  animation: rotateCircle 35s linear infinite;
}

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

.hud-radar-center-glyph {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--accent-gold);
  transform: translate(-50%, -50%) rotate(45deg);
  background: rgba(245, 158, 11, 0.15);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hud-runes {
  display: flex;
  justify-content: center;
  gap: 14px;
  color: var(--accent-gold);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  letter-spacing: 0.25em;
  opacity: 0.85;
}

.hud-bars {
  margin-top: 1.25rem;
}

.hud-bar-row {
  margin-bottom: 0.75rem;
}

.hud-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.hud-progress-track {
  width: 100%;
  height: 6px;
  background: #090e1f;
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  overflow: hidden;
}

.hud-progress-fill {
  height: 100%;
  border-radius: 2px;
}

.hud-progress-fill.gold {
  background: linear-gradient(90deg, #d97706, #fbbf24);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.4);
}

.hud-progress-fill.cyan {
  background: linear-gradient(90deg, #0284c7, #38bdf8);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

.hud-actions {
  display: flex;
  gap: 10px;
  margin-top: 1.25rem;
}

.hud-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: 1px solid var(--border-gold);
  transition: var(--transition);
}

.hud-btn.primary {
  background: var(--accent-gold);
  color: #070a14;
}

.hud-btn.primary:hover {
  background: var(--accent-gold-light);
  box-shadow: 0 0 14px rgba(245, 158, 11, 0.4);
}

.hud-btn.secondary {
  background: rgba(245, 158, 11, 0.08);
  color: var(--accent-gold);
}

.hud-btn.secondary:hover {
  background: rgba(245, 158, 11, 0.2);
}

/* ==========================================================================
   Section Styling & Headers
   ========================================================================== */
.section-wrapper {
  padding: 5rem 0;
  position: relative;
}

.section-wrapper.alt-bg {
  background: rgba(12, 18, 36, 0.5);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1rem;
}

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

/* ==========================================================================
   Deep Technical Architecture Article (Zero ordinal words, pure deduction)
   ========================================================================== */
.article-deep-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-box);
  position: relative;
  overflow: hidden;
}

.article-deep-wrap::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #f59e0b, #38bdf8, #818cf8, #f59e0b);
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 700;
  color: #ffffff;
  margin: 2.5rem 0 1.25rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(245, 158, 11, 0.25);
  letter-spacing: -0.01em;
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent-gold-light);
  margin: 1.85rem 0 0.85rem;
}

.article-content p {
  margin-bottom: 1.35rem;
}

.article-content ul, 
.article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
  padding-left: 0.5rem;
}

.article-content li {
  margin-bottom: 0.6rem;
  color: #94a3b8;
}

.article-content li strong {
  color: #f1f5f9;
}

.tech-highlight-box {
  background: rgba(10, 14, 28, 0.7);
  border-left: 4px solid var(--accent-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  color: #e2e8f0;
}

.tech-highlight-box p:last-child {
  margin-bottom: 0;
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-input);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.data-table th {
  background: #111a33;
  color: var(--accent-gold);
  font-weight: 600;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.data-table td {
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}

.data-table tr:hover td {
  background: rgba(245, 158, 11, 0.04);
}

.data-table .highlight {
  color: #34d399;
  font-weight: 600;
}

/* Code Snippets */
.code-container {
  margin: 1.75rem 0;
  border-radius: var(--radius-md);
  background: #060913;
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: #0f1629;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.code-lang-tag {
  color: var(--accent-gold);
}

.code-block {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  color: #e2e8f0;
  overflow-x: auto;
  white-space: pre;
}

/* ==========================================================================
   Advantages Grid
   ========================================================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.adv-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: transparent;
  transition: var(--transition);
}

.adv-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4), 0 0 15px rgba(245, 158, 11, 0.1);
}

.adv-card:hover::before {
  background: var(--accent-gold);
}

.adv-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  margin-bottom: 1.25rem;
}

.adv-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

.adv-card p {
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.65;
}

/* ==========================================================================
   Pricing Packages (Reference Image 1: 10 Cards layout)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-bottom: 2rem;
}

.pricing-card {
  background: #11142a;
  border: 1px solid #232a52;
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-gold);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(245, 158, 11, 0.18);
}

.pricing-card.featured {
  border-color: #8b5cf6;
  background: linear-gradient(180deg, #181838 0%, #101228 100%);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.25);
}

.pricing-card.featured:hover {
  border-color: #a78bfa;
}

.badge-featured {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: #a855f7;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.badge-tenth {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: linear-gradient(90deg, #f59e0b, #ef4444);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

.plan-type-label {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 0.5rem;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 0.5rem;
}

.plan-currency {
  font-size: 1.5rem;
  color: #cbd5e1;
  font-weight: 600;
}

.plan-price {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.plan-period {
  font-size: 0.95rem;
  color: #94a3b8;
  margin-left: 2px;
}

.plan-sub-info {
  font-size: 0.9rem;
  color: #94a3b8;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.plan-features-list {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #cbd5e1;
  margin-bottom: 0.85rem;
}

.feature-sparkle {
  color: #a855f7;
  font-size: 0.75rem;
}

.pricing-card.featured .feature-sparkle {
  color: #c084fc;
}

.btn-plan-buy {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-full);
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-plan-buy:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.pricing-card.featured .btn-plan-buy {
  background: #a855f7;
  border-color: #c084fc;
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.4);
}

.pricing-card.featured .btn-plan-buy:hover {
  background: #9333ea;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.6);
}

.more-plans-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.plan-mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.plan-mini-card.tenth-card {
  border: 1px solid #f59e0b;
  background: linear-gradient(145deg, #1b162f 0%, #121730 100%);
  position: relative;
  box-shadow: 0 0 18px rgba(245, 158, 11, 0.15);
}

.plan-mini-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.plan-mini-price {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
}

.plan-mini-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* ==========================================================================
   Article Showcase with Dynamic Sparkle Accents
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.article-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-gold);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 18px rgba(245, 158, 11, 0.15);
}

.article-card:hover::after {
  opacity: 1;
}

.article-meta-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.tag-pill {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-gold);
  font-family: var(--font-mono);
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  color: #fff;
  margin-bottom: 0.85rem;
  transition: var(--transition);
}

.article-card:hover .article-card-title {
  color: var(--accent-gold-light);
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-footer-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 0.85rem;
  font-family: var(--font-mono);
}

/* ==========================================================================
   50 FAQ Section (Searchable, Categorized Accordion)
   ========================================================================== */
.faq-search-box {
  max-width: 620px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.faq-search-input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.faq-search-input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.25);
}

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

.faq-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.faq-filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  padding: 6px 16px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.faq-filter-btn:hover,
.faq-filter-btn.active {
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--accent-gold);
  color: var(--accent-gold-light);
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 980px;
  margin: 0 auto;
}

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

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

.faq-question {
  padding: 1.15rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: #f1f5f9;
  user-select: none;
}

.faq-question:hover {
  color: var(--accent-gold-light);
}

.faq-indicator {
  font-size: 1.25rem;
  color: var(--accent-gold);
  transition: transform 0.25s ease;
  font-weight: 300;
}

.faq-item.active .faq-indicator {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.5rem;
  color: #94a3b8;
  font-size: 0.94rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.5rem 1.25rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #04070e;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand h4 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-col h5 {
  color: #f8fafc;
  font-size: 0.95rem;
  margin-bottom: 1.15rem;
  letter-spacing: 0.05em;
}

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

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .advantages-grid,
  .articles-grid,
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .more-plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #0a0f20;
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    gap: 1.25rem;
  }
  .main-nav.show {
    display: flex;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .advantages-grid,
  .articles-grid,
  .pricing-grid,
  .more-plans-grid {
    grid-template-columns: 1fr;
  }
  .article-deep-wrap {
    padding: 1.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}