/* ==========================================================================
   Mitce VPN - Velocity Developer-Grade Stylesheet (Linear & Vercel Inspired)
   Pure Native CSS | Zero External Dependencies | Sub-second Load Speed
   ========================================================================== */

/* --- Design Tokens & Color Palettes --- */
:root {
  /* Day / Light Mode (Default) */
  --bg-primary: #f6f8fb;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-subtle: #f1f5f9;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(246, 248, 251, 0.82);
  --bg-glass-card: rgba(255, 255, 255, 0.88);
  --border-color: rgba(203, 213, 225, 0.65);
  --border-subtle: rgba(226, 232, 240, 0.8);
  --border-focus: #2563eb;

  --text-main: #090d16;
  --text-muted: #475569;
  --text-light: #64748b;
  --text-inverse: #ffffff;

  --primary: #1d4ed8;
  --primary-rgb: 29, 78, 216;
  --primary-hover: #1e40af;
  --primary-gradient: linear-gradient(135deg, #1d4ed8 0%, #4338ca 100%);

  --accent-emerald: #059669;
  --accent-emerald-rgb: 5, 150, 105;
  --accent-cyan: #0284c7;
  --accent-purple: #7c3aed;
  --accent-amber: #d97706;

  --card-border-glow: rgba(37, 99, 235, 0.12);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --transition-theme: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Night / Dark Mode (Deep Titanium Canvas inspired by Linear & Vercel) */
[data-theme="dark"] {
  --bg-primary: #090b10;
  --bg-surface: #0e121a;
  --bg-card: #121722;
  --bg-card-hover: #171d2b;
  --bg-subtle: #161c28;
  --bg-elevated: #1a2233;
  --bg-glass: rgba(9, 11, 16, 0.85);
  --bg-glass-card: rgba(18, 23, 34, 0.85);
  --border-color: rgba(255, 255, 255, 0.09);
  --border-subtle: rgba(255, 255, 255, 0.05);
  --border-focus: #3b82f6;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-light: #64748b;
  --text-inverse: #090b10;

  --primary: #3b82f6;
  --primary-rgb: 59, 130, 246;
  --primary-hover: #60a5fa;
  --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);

  --accent-emerald: #10b981;
  --accent-emerald-rgb: 16, 185, 129;
  --accent-cyan: #38bdf8;
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;

  --card-border-glow: rgba(59, 130, 246, 0.18);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.85);
  --shadow-glow: 0 0 50px rgba(59, 130, 246, 0.22);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  transition: var(--transition-theme);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Subtle Mesh Grid (Developer aesthetic) */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -2;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

[data-theme="dark"] body::before {
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Container & Sections --- */
.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 88px 0;
  position: relative;
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
}

/* --- Typography & Section Headers --- */
.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.08);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  text-transform: uppercase;
}

[data-theme="dark"] .section-tag {
  background: rgba(var(--primary-rgb), 0.15);
  border-color: rgba(var(--primary-rgb), 0.3);
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  color: var(--text-main);
}

.section-subtitle {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.65;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.8rem;
  }
  .section-subtitle {
    font-size: 0.98rem;
  }
}

/* --- Header & Navigation Bar --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-theme);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.brand-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.35);
  color: #fff;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 550;
  color: var(--text-muted);
  position: relative;
  padding: 6px 4px;
}

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

.nav-link.highlight-tag {
  color: var(--accent-purple);
  font-weight: 600;
}

.nav-link.highlight-tag::after {
  content: "NEW";
  font-size: 0.65rem;
  background: var(--accent-purple);
  color: #fff;
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: 5px;
  vertical-align: top;
}

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

/* Delicate Day/Night Theme Toggle Button */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  transition: var(--transition-fast);
  position: relative;
}

[data-theme="dark"] .theme-toggle-btn {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: #f8fafc;
}

.theme-toggle-btn:hover {
  background: rgba(var(--primary-rgb), 0.1);
  border-color: var(--primary);
  transform: translateY(-1px);
}

.theme-icon {
  width: 19px;
  height: 19px;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

.icon-sun {
  display: none;
}

.icon-moon {
  display: block;
}

[data-theme="dark"] .icon-sun {
  display: block;
}

[data-theme="dark"] .icon-moon {
  display: none;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.28);
}

.btn-primary:hover {
  transform: translateY(-1.5px);
  box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.38);
}

.btn-outline {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1.5px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.05);
}

.btn-lg {
  padding: 13px 28px;
  font-size: 1.02rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.86rem;
}

.btn-block {
  width: 100%;
}

/* --- Reactive Border Glow Card (Linear / Vercel style) --- */
.reactive-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-fast);
}

.reactive-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: radial-gradient(
    400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(59, 130, 246, 0.45),
    transparent 40%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* --- Hero Section & Client Window Mockup --- */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-glow-bg {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 550px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.16) 0%, rgba(99, 102, 241, 0.06) 45%, transparent 70%);
  filter: blur(85px);
  z-index: -1;
  pointer-events: none;
}

[data-theme="dark"] .hero-glow-bg {
  background: radial-gradient(circle, rgba(59, 130, 246, 0.22) 0%, rgba(139, 92, 246, 0.12) 45%, transparent 75%);
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.hero-badge-pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-size: 3.35rem;
  font-weight: 850;
  line-height: 1.16;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.hero-title .brand-accent {
  color: var(--primary);
  display: inline-block;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #1d4ed8 0%, #6366f1 50%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .hero-title .gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 34px;
  line-height: 1.65;
  text-align: center;
}

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

/* --- Interactive Multi-Platform Client Mockup Window --- */
.client-mockup-wrapper {
  max-width: 820px;
  margin: 0 auto 40px;
  perspective: 1000px;
}

.client-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 50px rgba(var(--primary-rgb), 0.08);
  overflow: hidden;
  transition: var(--transition-theme);
}

.client-titlebar {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.traffic-dots {
  display: flex;
  align-items: center;
  gap: 7px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-close { background: #ef4444; }
.dot-min { background: #f59e0b; }
.dot-max { background: #10b981; }

.client-app-name {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.client-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
}

.client-tab-badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.client-body {
  padding: 36px 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
}

@media (max-width: 768px) {
  .client-body {
    grid-template-columns: 1fr;
    padding: 24px 20px;
    gap: 24px;
  }
}

/* Connect Switcher & State Display */
.connection-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.connect-btn-wrapper {
  position: relative;
  width: 130px;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

/* Liquid Animated Ring Trail */
.liquid-ring {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  border-radius: 50%;
  border: 3px dashed var(--border-color);
  transition: all 0.4s ease;
  pointer-events: none;
}

.connecting .liquid-ring {
  border-color: var(--accent-amber);
  animation: spin 1.4s linear infinite;
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
}

.connected .liquid-ring {
  border: 3px solid var(--accent-emerald);
  animation: none;
  box-shadow: 0 0 26px rgba(16, 185, 129, 0.55);
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

.virtual-power-btn {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  box-shadow: var(--shadow-md);
  transition: var(--transition-spring);
  position: relative;
  z-index: 2;
}

.virtual-power-btn:hover {
  transform: scale(1.06);
  border-color: var(--primary);
  color: var(--primary);
}

.connecting .virtual-power-btn {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  transform: scale(0.98);
}

.connected .virtual-power-btn {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border-color: #10b981;
  color: #ffffff;
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.4);
}

.power-icon {
  width: 36px;
  height: 36px;
  transition: var(--transition-fast);
}

.status-text-headline {
  font-size: 1.18rem;
  font-weight: 750;
  margin-bottom: 4px;
}

.status-text-sub {
  font-size: 0.86rem;
  color: var(--text-light);
  font-family: var(--font-mono);
}

/* Client Detail Monitor Column */
.client-info-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
}

.info-label {
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

.info-value.emerald {
  color: var(--accent-emerald);
}

.speed-meters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.speed-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 8px 12px;
  text-align: center;
}

.speed-title {
  font-size: 0.72rem;
  color: var(--text-light);
  text-transform: uppercase;
}

.speed-num {
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-main);
  margin-top: 2px;
}

/* --- Multi-Platform Download & Subscription Matrix --- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

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

.platform-card:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--primary-rgb), 0.4);
  box-shadow: var(--shadow-md);
}

.platform-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  margin-bottom: 16px;
  border: 1px solid var(--border-subtle);
}

.platform-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.platform-client-hint {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-bottom: 18px;
}

.btn-copy-sub {
  width: 100%;
  font-size: 0.84rem;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-xs);
  transition: var(--transition-fast);
  position: relative;
}

.btn-copy-sub:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.05);
}

.btn-copy-sub.copied {
  background: rgba(16, 185, 129, 0.12);
  border-color: var(--accent-emerald);
  color: var(--accent-emerald);
}

@media (max-width: 992px) {
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .platform-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Features Grid (3 Core Advantages) --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.icon-blue { background: rgba(37, 99, 235, 0.12); color: #2563eb; }
.icon-purple { background: rgba(139, 92, 246, 0.12); color: #8b5cf6; }
.icon-emerald { background: rgba(16, 185, 129, 0.12); color: #10b981; }

.feature-title {
  font-size: 1.25rem;
  font-weight: 750;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.feature-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.feature-list-item:last-child {
  margin-bottom: 0;
}

.feature-list-item svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
}

@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Dual Showcase Grid (Streaming & AI) --- */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.showcase-card {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
}

.showcase-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.showcase-badge-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.badge-media {
  background: linear-gradient(135deg, #f43f5e 0%, #fb7185 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(244, 63, 94, 0.3);
}

.badge-ai {
  background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.showcase-title {
  font-size: 1.45rem;
  font-weight: 750;
  line-height: 1.3;
}

.showcase-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
}

.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-blue { background-color: #3b82f6; }
.dot-green { background-color: #10b981; }
.dot-purple { background-color: #8b5cf6; }
.dot-amber { background-color: #f59e0b; }
.dot-cyan { background-color: #06b6d4; }

.showcase-highlights {
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-top: auto;
  border-left: 3px solid var(--primary);
}

.highlight-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.highlight-row:last-child {
  margin-bottom: 0;
}

@media (max-width: 992px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Pricing Section (Minimalist Pill Cards & Real Market Rates) --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.pricing-card {
  padding: 38px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 12px 36px rgba(var(--primary-rgb), 0.16);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-5px);
}

.pricing-pill-ribbon {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 750;
  padding: 3px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.35);
  white-space: nowrap;
}

.plan-header {
  text-align: center;
  margin-bottom: 22px;
}

.plan-title-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
}

.plan-price-wrap {
  margin: 18px 0 6px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 3px;
}

.currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.price {
  font-size: 2.75rem;
  font-weight: 850;
  color: var(--text-main);
  line-height: 1;
  letter-spacing: -0.03em;
}

.period {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.billing-note {
  font-size: 0.78rem;
  color: var(--accent-emerald);
  font-weight: 600;
}

.plan-features {
  list-style: none;
  margin: 26px 0;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.plan-feature-item svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.plan-footer {
  margin-top: auto;
}

@media (max-width: 992px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
}

/* --- Reviews Section --- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.review-card {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
}

.review-stars {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 14px;
}

.review-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 750;
  font-size: 0.92rem;
  color: var(--primary);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.author-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-main);
}

.author-role {
  font-size: 0.8rem;
  color: var(--text-light);
}

@media (max-width: 992px) {
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

/* --- FAQ Section --- */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.faq-item[open] {
  border-color: rgba(var(--primary-rgb), 0.45);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-size: 1.02rem;
  font-weight: 650;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  padding: 0 22px 20px;
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --- Pre-Footer Banner --- */
.cta-banner {
  margin: 40px auto 80px;
  max-width: 1220px;
  padding: 0 24px;
}

.cta-banner-inner {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #4338ca 100%);
  border-radius: var(--radius-lg);
  padding: 54px 40px;
  text-align: center;
  color: #ffffff;
  box-shadow: 0 16px 36px rgba(var(--primary-rgb), 0.25);
  position: relative;
  overflow: hidden;
}

.cta-banner-title {
  font-size: 2.2rem;
  font-weight: 850;
  margin-bottom: 12px;
}

.cta-banner-sub {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 620px;
  margin: 0 auto 28px;
}

.cta-banner-inner .btn-white {
  background: #ffffff;
  color: #1e3a8a;
  font-weight: 750;
}

.cta-banner-inner .btn-white:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* --- Footer (Strict 4 Titles Requirement) --- */
.footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  padding: 46px 0 34px;
  transition: var(--transition-theme);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-link {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.08);
}

.footer-copyright {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  padding: 8px;
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 24px;
    gap: 14px;
    box-shadow: var(--shadow-lg);
  }
  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* Prose layout for standalone pages */
.page-hero {
  padding: 60px 0 40px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.page-content-wrap {
  max-width: 860px;
  margin: 48px auto 80px;
  padding: 0 24px;
}

.prose {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 750;
  color: var(--text-main);
  margin: 34px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.prose h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 22px 0 12px;
}

.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 20px 22px; }
.prose li { margin-bottom: 8px; }

.callout-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 22px 0;
}

.callout-danger { border-left-color: #ef4444; background: rgba(239, 68, 68, 0.04); }
.callout-success { border-left-color: #10b981; background: rgba(16, 185, 129, 0.04); }

/* Insights / News Article Styles */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.insight-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.insight-article-card:hover {
  transform: translateY(-3px);
  border-color: rgba(var(--primary-rgb), 0.4);
  box-shadow: var(--shadow-md);
}

.insight-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.insight-tag {
  color: var(--primary);
  font-weight: 700;
  background: rgba(var(--primary-rgb), 0.08);
  padding: 2px 8px;
  border-radius: 4px;
}

.insight-title {
  font-size: 1.25rem;
  font-weight: 750;
  margin-bottom: 10px;
  color: var(--text-main);
}

.insight-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* --- SEO Article Detailed Layout --- */
.article-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  max-width: 1220px;
  margin: 40px auto 80px;
  padding: 0 24px;
}

.article-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  min-width: 0;
}

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

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

.breadcrumb-sep {
  color: var(--border-color);
}

.article-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.article-h1 {
  font-size: 2.2rem;
  font-weight: 850;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.86rem;
  color: var(--text-light);
  flex-wrap: wrap;
}

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

/* TOC Box */
.toc-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 28px 0 36px;
}

.toc-title {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-main);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 0;
}

.toc-link {
  font-size: 0.92rem;
  color: var(--text-muted);
  display: flex;
  align-items: baseline;
  gap: 8px;
  transition: var(--transition-fast);
}

.toc-link:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.toc-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--primary);
}

/* In-article Table */
.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.article-table th, .article-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  text-align: left;
}

.article-table th {
  background: var(--bg-subtle);
  font-weight: 700;
  color: var(--text-main);
}

/* Article Sidebar */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-sticky {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.sidebar-card-title {
  font-size: 1.02rem;
  font-weight: 750;
  color: var(--text-main);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Related articles section inside article */
.related-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.related-item-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px;
  transition: var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.related-item-card:hover {
  border-color: var(--primary);
  background: var(--bg-card);
  transform: translateY(-2px);
}

.related-item-title {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.4;
}

.related-item-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 992px) {
  .article-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-main {
    padding: 30px 22px;
  }
  .article-h1 {
    font-size: 1.7rem;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
}