/* ==========================================================================
   ExpressNet - 网际快车 Modern Template Stylesheet
   Design Inspiration: Clean Tech, Low-Poly Polyline Background, Soft Cards
   ========================================================================== */

:root {
  --primary: #0284c7;
  --primary-light: #38bdf8;
  --primary-dark: #0369a1;
  --primary-gradient: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
  --button-gradient: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
  --button-hover: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  
  --bg-page: #0b192c;
  --card-bg: #ffffff;
  --card-subtle: #f8fafc;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --border-color: #e2e8f0;
  --border-active: #7dd3fc;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbebfb;

  --shadow-sm: 0 2px 8px rgba(2, 132, 199, 0.06);
  --shadow-md: 0 10px 30px rgba(2, 132, 199, 0.1);
  --shadow-lg: 0 20px 50px rgba(2, 132, 199, 0.15);
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #0d3b66;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 0 20px 40px 20px;
  position: relative;
  overflow-x: hidden;
}

/* Reduced Motion Respect */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================
   LOW-POLY GEOMETRIC BACKGROUND
   ========================================== */
.poly-bg-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  overflow: hidden;
  background: radial-gradient(circle at 50% 30%, #1e5799 0%, #154b86 40%, #0d2b45 100%);
}

.poly-bg-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    polygon(0 0, 100% 0, 100% 100%, 0 100%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1440' height='900' viewBox='0 0 1440 900'%3E%3Cg fill-opacity='0.15'%3E%3Cpolygon fill='%2338bdf8' points='0,0 300,0 150,200'/%3E%3Cpolygon fill='%230284c7' points='300,0 700,0 500,250'/%3E%3Cpolygon fill='%230369a1' points='700,0 1200,0 950,180'/%3E%3Cpolygon fill='%230c4a6e' points='1200,0 1440,0 1440,300 1300,150'/%3E%3Cpolygon fill='%230284c7' points='0,0 150,200 0,400'/%3E%3Cpolygon fill='%2338bdf8' points='150,200 500,250 350,500 0,400'/%3E%3Cpolygon fill='%230369a1' points='500,250 950,180 750,450 350,500'/%3E%3Cpolygon fill='%2338bdf8' points='950,180 1300,150 1440,300 1150,500 750,450'/%3E%3Cpolygon fill='%230c4a6e' points='0,400 350,500 180,750 0,900'/%3E%3Cpolygon fill='%230284c7' points='350,500 750,450 550,800 180,750'/%3E%3Cpolygon fill='%230369a1' points='750,450 1150,500 950,850 550,800'/%3E%3Cpolygon fill='%2338bdf8' points='1150,500 1440,300 1440,750 950,850'/%3E%3Cpolygon fill='%230284c7' points='180,750 550,800 400,900 0,900'/%3E%3Cpolygon fill='%230369a1' points='550,800 950,850 800,900 400,900'/%3E%3Cpolygon fill='%230c4a6e' points='950,850 1440,750 1440,900 800,900'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
  opacity: 0.85;
}

/* ==========================================
   FLOATING CHAPTER SIDE NAV ARROWS
   ========================================== */
.chapter-nav-aside {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  padding: 12px 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.chapter-arrow {
  background: #0284c7;
  color: #ffffff;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
}

.chapter-arrow:hover:not(.disabled) {
  background: #38bdf8;
  transform: scale(1.1);
}

.chapter-arrow.disabled {
  opacity: 0.3;
  cursor: not-allowed;
  background: #475569;
}

.chapter-indicator {
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.5px;
  padding: 4px 2px;
}

/* ==========================================
   MAIN WRAPPER CARD
   ========================================== */
.main-wrapper {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 1280px;
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.2);
  padding: 0 48px 48px 48px;
  margin-top: 20px;
  backdrop-filter: blur(10px);
}

/* ==========================================
   STICKY TOP NAVBAR (置顶导航)
   ========================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  margin-left: -48px;
  margin-right: -48px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  box-shadow: 0 4px 20px rgba(2, 132, 199, 0.08);
  transition: all 0.3s ease;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: #e0f2fe;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.logo-text small {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-muted);
  transition: all 0.2s ease;
  position: relative;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--button-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background: var(--button-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-outline {
  background: #f0f9ff;
  color: var(--primary);
  border: 1px solid #bae6fd;
}

.btn-outline:hover {
  background: #e0f2fe;
  color: var(--primary-dark);
}

.btn-cta {
  background: var(--button-gradient);
  color: #ffffff;
  padding: 14px 32px;
  font-size: 17px;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.4);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(14, 165, 233, 0.5);
}

.btn-cta .arrow {
  transition: transform 0.2s ease;
}

.btn-cta:hover .arrow {
  transform: translateX(4px);
}

.btn-buy {
  width: 100%;
  background: var(--button-gradient);
  color: #ffffff;
  padding: 14px 20px;
  font-size: 16px;
  border-radius: 12px;
  margin-top: 16px;
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.3);
}

.btn-buy:hover {
  background: var(--button-hover);
  box-shadow: 0 8px 22px rgba(2, 132, 199, 0.4);
  transform: translateY(-2px);
}

/* Focus outline for accessibility */
a:focus-visible, button:focus-visible {
  outline: 3px solid #38bdf8;
  outline-offset: 2px;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero-card {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  background: linear-gradient(180deg, #f0fdf4 0%, #f0f9ff 100%);
  border: 1px solid #e0f2fe;
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 48px;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #bae6fd;
  color: var(--primary);
  font-weight: 700;
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.08);
}

.dot-live {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: 40px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.15;
  margin-bottom: 12px;
}

.hero-subtitle {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-top: 4px;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
  max-width: 560px;
}

.hero-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
  margin-bottom: 32px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: #0369a1;
}

.feat-icon {
  font-size: 16px;
  width: 24px;
  text-align: center;
}

/* Dashboard & Graphic */
.live-dashboard-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid #e0f2fe;
  padding: 24px;
  box-shadow: var(--shadow-lg);
}

.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed #e2e8f0;
}

.dash-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 14px;
  color: #0f172a;
}

.dash-badge-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ecfdf5;
  color: #059669;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid #a7f3d0;
}

.live-dot {
  width: 6px;
  height: 6px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

.dash-graphic {
  position: relative;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(180deg, #f8fafc 0%, #f0f9ff 100%);
  border-radius: 12px;
  margin-bottom: 16px;
}

.express-car-container {
  width: 100%;
  max-width: 260px;
  animation: carFloat 3s ease-in-out infinite;
}

@keyframes carFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-4px); }
}

.speed-lines span {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, transparent, #38bdf8, transparent);
  animation: moveLine 1.2s linear infinite;
}

.speed-lines span:nth-child(1) { top: 25%; left: 0; width: 40%; animation-delay: 0s; }
.speed-lines span:nth-child(2) { top: 50%; left: 10%; width: 50%; animation-delay: 0.4s; }
.speed-lines span:nth-child(3) { top: 75%; left: 5%; width: 35%; animation-delay: 0.8s; }

@keyframes moveLine {
  0% { transform: translateX(-100%); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateX(250%); opacity: 0; }
}

.dash-speed-display {
  text-align: center;
  margin-bottom: 20px;
}

.speed-number-wrap {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.speed-value {
  font-size: 42px;
  font-weight: 900;
  color: #0284c7;
  letter-spacing: -1px;
}

.speed-unit {
  font-size: 16px;
  font-weight: 700;
  color: #64748b;
}

.speed-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.shield-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f0f9ff;
  color: #0284c7;
  font-weight: 700;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  border: 1px solid #bae6fd;
}

.dash-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stat-card {
  background: #f8fafc;
  border: 1px solid #f1f5f9;
  border-radius: 10px;
  padding: 10px 8px;
  text-align: center;
}

.stat-lbl {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.stat-val {
  font-size: 13px;
  font-weight: 800;
}

.text-emerald { color: #10b981; }
.text-blue { color: #0284c7; }

/* ==========================================
   ADVANTAGES GRID
   ========================================== */
.section-container {
  margin-bottom: 56px;
  scroll-margin-top: 80px;
}

.section-header {
  text-align: center;
  margin-bottom: 36px;
}

.section-title {
  font-size: 28px;
  font-weight: 900;
  color: #0f172a;
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.advantage-card {
  background: #ffffff;
  border: 1px solid #e0f2fe;
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: left;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #7dd3fc;
}

.adv-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.advantage-card h3 {
  font-size: 17px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 8px;
}

.advantage-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================
   STREAMING & AI SUPPORT
   ========================================== */
.streaming-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 16px;
}

.stream-card {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid #e0f2fe;
  border-radius: var(--radius-md);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
}

.stream-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: #e0f2fe;
  color: #0284c7;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
}

.stream-icon {
  font-size: 30px;
  margin-bottom: 12px;
}

.stream-card h3 {
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 8px;
}

.stream-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.disclaimer-text {
  font-size: 12px;
  color: #94a3b8;
  text-align: center;
  margin-top: 12px;
}

/* ==========================================
   PRICING SECTION
   ========================================== */
.notice-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 12px;
  padding: 14px 20px;
  margin-bottom: 32px;
  font-size: 14px;
  color: #0369a1;
}

.notice-icon {
  width: 24px;
  height: 24px;
  background: #0284c7;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
  flex-shrink: 0;
}

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

.pricing-card {
  position: relative;
  background: #ffffff;
  border: 1px solid #bae6fd;
  border-radius: var(--radius-lg);
  padding: 32px 24px 24px;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: #38bdf8;
}

.pricing-card.featured {
  border: 2px solid #0284c7;
  box-shadow: var(--shadow-md);
}

.card-badge-top {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--button-gradient);
  color: #ffffff;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 18px;
  border-radius: 20px;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
}

.popular-ribbon {
  position: absolute;
  top: 14px;
  right: 14px;
  background: #ef4444;
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
}

.plan-name {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
  margin-top: 6px;
  margin-bottom: 4px;
}

.plan-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 16px;
  color: #0284c7;
}

.price-box .currency {
  font-size: 22px;
  font-weight: 800;
}

.price-box .amount {
  font-size: 38px;
  font-weight: 900;
  letter-spacing: -1px;
}

.traffic-box {
  background: #f8fafc;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.traffic-num {
  font-size: 26px;
  font-weight: 900;
  color: #0f172a;
}

.traffic-num small {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
}

.traffic-lbl {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}

.plan-rule {
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px dotted #cbd5e1;
  padding-bottom: 16px;
  margin-bottom: 16px;
}

.plan-features {
  list-style: none;
  text-align: left;
  margin-bottom: 24px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: #334155;
  margin-bottom: 12px;
  line-height: 1.4;
}

.check-icon {
  width: 18px;
  height: 18px;
  color: #0284c7;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ==========================================
   NODES TABLE
   ========================================== */
.nodes-header {
  text-align: center;
  margin-bottom: 28px;
}

.nodes-title {
  font-size: 28px;
  font-weight: 900;
  color: #0284c7;
  margin-bottom: 6px;
}

.nodes-subtitle {
  font-size: 14px;
  color: var(--text-muted);
}

.table-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-btn {
  background: #f1f5f9;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: #e2e8f0;
  color: #0f172a;
}

.filter-btn.active {
  background: #0284c7;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 8px 14px;
  width: 260px;
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  width: 100%;
}

.table-card {
  background: #ffffff;
  border: 1px solid #e0f2fe;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.nodes-table th {
  background: #f8fafc;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  padding: 16px 20px;
  border-bottom: 1px solid #e2e8f0;
}

.nodes-table td {
  padding: 18px 20px;
  border-bottom: 1px solid #f1f5f9;
  font-size: 14px;
  vertical-align: middle;
}

.nodes-table tr:hover {
  background: #f0f9ff;
}

.node-cell {
  display: flex;
  align-items: center;
  gap: 14px;
}

.flag-badge {
  font-size: 14px;
  font-weight: 900;
  color: #475569;
  background: #f1f5f9;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.node-name {
  font-weight: 800;
  color: #0284c7;
  font-size: 14px;
}

.node-sub {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}

.tag-proto {
  display: inline-block;
  background: #e0f2fe;
  color: #0284c7;
  font-weight: 700;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
}

.tag-ratio {
  display: inline-block;
  background: #fef3c7;
  color: #d97706;
  font-weight: 800;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ecfdf5;
  color: #059669;
  font-weight: 700;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 20px;
}

.ping-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ecfdf5;
  color: #059669;
  font-weight: 800;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
}

/* ==========================================
   ARTICLES SECTION
   ========================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.article-card {
  background: #ffffff;
  border: 1px solid #e0f2fe;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #7dd3fc;
}

.art-tag {
  display: inline-block;
  background: #f0f9ff;
  color: #0284c7;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.art-title {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 10px;
}

.art-title a {
  color: #0f172a;
  text-decoration: none;
  transition: color 0.2s ease;
}

.art-title a:hover {
  color: #0284c7;
}

.art-excerpt {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.art-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-light);
  border-top: 1px dashed #f1f5f9;
  padding-top: 12px;
}

.art-link {
  color: #0284c7;
  font-weight: 800;
  text-decoration: none;
}

/* ==========================================
   FAQ ACCORDION
   ========================================== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid #e0f2fe;
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  text-align: left;
  cursor: pointer;
  outline: none;
}

.faq-icon {
  font-size: 20px;
  color: #0284c7;
  transition: transform 0.3s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

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

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

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 24px 18px 24px;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  margin-top: 24px;
  border-top: 1px solid #f1f5f9;
  color: var(--text-muted);
  font-size: 13px;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-weight: 800;
  color: var(--primary);
  margin-right: 12px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--primary);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #0f172a;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  animation: toastIn 0.3s ease forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

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

@media (max-width: 768px) {
  .main-wrapper {
    padding: 0 20px 20px 20px;
  }
  .navbar {
    padding: 14px 20px;
    margin-left: -20px;
    margin-right: -20px;
  }
  .nav-links {
    display: none;
  }
  .advantages-grid, .streaming-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  .chapter-nav-aside {
    right: 10px;
    padding: 8px 6px;
  }
  .chapter-arrow {
    width: 30px;
    height: 30px;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-subtitle {
    font-size: 22px;
  }
}